You are not logged in.
4. What is the minimum number of right angles there can be?
A8
B10
C3
D0
E 12
F 7
12. Each set of numbers below represents the measures of three angles.
Which set represent angle measures that could be found in a triangle?
A(30o, 100o, 20o)
B(36o, 42o, 65o)
C(30o, 57o, 30o)
D(44o, 63o, 73o)
E (67o, 41o, 62o)
F (29o, 131o, 40o)
19. Here are two triangles. I am trying to measure the area of triangle ABC. The formula for area of a triangle is
base*height/2.
I know the base, but I need to find the height. I know the top of triangle ABC is directly above a point 4.5 units from point A. I also know that <CAB is the same as <FDE, and that ls_DF has a length of 1, and ls_FE has a length of 1.43. What is the area of triangle ABC?
A15.26 square units
B19.31 square units
C25.37 square units
D27.16 square units
E 27.19 square units
F 13.02 square units
1. D
2. B
3. F
4. C
my answers
Find the scale factor of each if the polygons are proportional. Just like examples 1 and 3.
1. A = 2, 6, 8, 9 B = 4, 12, 16, 18
Aprop, s.f.= 1:4
Bprop, s.f.= 1:9
Cprop, s.f.= 1:5
Dprop, s.f.= 1:2
E prop, s.f.= 1:10
F prop, s.f.= 1:3
2. A = 2, 3, 6, 10 B= 6, 9, 18, 30
Aprop, s.f.=1:9
Bprop, s.f.=1:3
Cprop, s.f.=1:16
Dprop, s.f.=1:2
E prop, s.f.= 1:18
F prop, s.f.= 1:6
3. A = 7, 10, 14, 15 B = 17.5, 25, 35, 37.5
AProp, s.f. = 1:9
BProp, s.f. = 3:8
CProp, s.f. = 2:7
DProp, s.f. = 4:9
E Prop, s.f. = 6:7
F Prop, s.f. = 2:5
4. A = 4, 4, 5, 6 B = 1.2, 1.2, 1.5, 1.8
AProp, s.f. = 6:4
BProp, s.f. = 9:2
CProp, s.f. = 1:10
DProp, s.f. = 11:9
E Prop, s.f. = 10:3
F Prop, s.f. = 5:2
5. A = 9, 10, 16, 19 B = 41.4, 46, 73.6, 87.4
AProp, s.f. = 0.217
BProp, s.f. = 0.318
CProp, s.f. = 0.421
DNot prop
E Prop, s.f. = 0.294
F Prop, s.f. = 0.721
6. A = 4, 9, 10, 14 B = 4.8, 10.8, 12, 16.8
AProp, s.f. = 0.227
BProp, s.f. = 0.756
CProp, s.f. = 0.841
D Prop, s.f. = 0.621
E Prop, s.f. = 0.124
F Prop: s.f. = 0.833
7. A = 7, 7, 21, 23 B = 28.7, 28.7, 86.1, 94.3
AProp, s.f. = 0.244
BProp, s.f. = 0.215
CProp, s.f. = 0.284
DProp, s.f. = 0.297
E Prop, s.f. = 0.236
F Prop, s.f. = 0.212
8. A = 11, 11, 16, 19 B = 16.5, 16.5, 24, 28.5
AProp, s.f. = 4:7
BProp, s.f. = 2:3
CProp, s.f. = 3:9
DNot prop
E Prop, s.f. = 4:5
F Prop, s.f. = 7:1
9. A = 4.4, 8.1, 20.1, 24.1 B = 15.4, 28.35, 70.35, 84.35
AProp, s.f. = 2:3
BProp, s.f. = 1:2
CProp, s.f. = 10:4
DProp, s.f. = 2:7
E Prop, s.f. = 6:10
F Prop, s.f. = 4:8
10. A = 1.2, 4.9, 18.6, 21.6 B = 0.24, .098, 3.72, 0.98
AProp, s.f. = 2:3
BProp, s.f. = 1:2
CProp, s.f. = 7:4
DNot prop
E Prop, s.f. = 7:8
F Prop, s.f. = 10:2
With this next set of problems, I will give you the first polygon and the scale factor, you find the similar polygon, just like example 2 and 4.
11. A = 2, 3, 7, 10
SCALE FACTOR = 2
A6, 9 ,12, 15
B2, 5, 10, 12
C4, 6, 14, 20
D1, 5, 8, 15
E 9, 10, 14, 25
F 4, 8, 18, 23
12. A = 2, 5, 6, 9
SCALE FACTOR = 3
A8, 10, 22, 34
B3, 8, 15, 29
C7, 12, 16, 22
D6, 15, 18, 27
E 2, 15, 18, 30
F 18, 20, 29, 34
13. A = 5, 10, 13, 15
SCALE FACTOR = 0.5
A3.4, 8, 10.1, 20
B6, 7.2, 12.1, 18
C2.5, 5, 8, 11
D4, 5.5, 6.6, 10
E 2.5, 5, 6.5, 7.5
F 7.5, 9, 10.9, 16.7
14. A = 4, 5, 6, 15
SCALE FACTOR = 1.5
A4, 8.7, 11.2, 22
B5, 7.3, 9.1, 15
C8, 9.2, 15, 17.1
D6, 7.5, 9, 22.5
E 7.4, 5, 8.3, 9.1
F 9.9, 12, 18.2, 25
15. A = 2, 5, 16, 19
SCALE FACTOR = 2.9
A2.3, 5.5, 7.9, 9.5
B6.4, 9.2, 11.4, 25.2
C6, 7.8, 9.2, 13.5
D19, 26.8, 37, 42.5
E 5.8, 14.5, 46.4, 55.1
F 14, 17.4, 22.4, 32.9
16. A = 4, 5, 8, 16
SCALE FACTOR = 4.5
A18, 22.5, 36, 72
B10.4, 18, 29.2, 34
C5.2, 9.6, 10, 19.2
D3.5, 9, 15.4, 29
E 16, 19.3, 26, 28
F 20.2, 26, 29.9, 37.2
17. A = 1, 8, 18, 19
SCALE FACTOR = 2.8
A13, 19.6, 23.3, 36
B2.9, 9.9, 25.2, 48.7
C14, 18.8, 24.2, 38.8
D5, 9.2, 10, 13.4
E 7.4, 8.9, 13.2, 19.1
F 2.8, 22.4, 50.4, 53.2
18. A = 2, 3, 9, 14
SCALE FACTOR = 3.9
A2.4, 5.6, 7.8, 10.9
B9.2, 13.1, 27, 31.1
C6.4, 9.2, 18, 22.4
D7.8, 11.7, 35.1, 54.6
E 4.7, 8.2, 12.5, 24.2
F 3.9, 7.5, 10.2, 26.1
19. A = 0.7, 3.6, 7.7, 8
SCALE FACTOR = 2.6
A1.99, 9.26, 13.57 26.02
B2.91, 6.25, 7.18, 9.29
C6.75, 9.21, 10.01, 18.45
D3.74, 9.28, 40.05, 44.21
E 1.82, 9.36, 20.02, 20.8
F 5.29, 6.82, 9.71, 15.90
20. A = 8.2, 14.5, 15, 18.5
SCALE FACTOR = 4.6
A15, 26.1, 38.17, 41.07
B42.50, 65.98, 71.35, 75
C66.1, 72.8, 79, 86.04
D37.72, 66.7, 69, 85.1
E 10, 14.27, 19, 27.3
F 22.1, 27, 32.15, 40.05
9. If N = 11
A30
B26
C7
D44
E 11
F 18
10. If N = 43
A452
B554
C624
D860
E 721
F 631
11. If N = 55
A1007
B2214
C1997
D1838
E 1430
F 1112
12. If N = 20
A684
B340
C111
D170
E 573
F 890
13. If N = 89
A1324
B3124
C7519
D 5449
E 3827
F 8791
14. If N = 33
A495
B813
C368
D598
E 245
F 438
In the next 5 questions, we will be using the information we learned from the "paragraph proof" in the lesson to determine the sum of the inner angles of regular polygons.
15. Since a pentagon is a closed shape, what must the sum of the angles of deviation be?
A270o
B180o
C90o
D60o
E 320o
F 360o
16. Divide that number by the number of angles a pentagon has to get the degree measure of a single angle of deviation:
A2o
B359o
C471o
D72o
E 6o
F 7o
17. In the paragraph proof it says: "The inner angles of the triangle are supplementary to the angles of deviation, therefore, the sum of each inner angle and its corresponding angle of deviation is 180." Using the number you got from #16, subtract the angle of deviation from 180o to get the measure of a single inner angle:
A70o
B82o
C142o
D85o
E 108o
F 42o
18. What is the sum of all of the inner angles of a pentagon?
A540o
B432o
C360o
D112o
E 180o
F 900o
19. Using the same or a similar process, what is the measure of a single angle of deviation on a regular octagon?
A72o
B45o
C83o
D40o
E 8o
F 42o
20. Using the same or a similar process, what is the sum of the inner angles of an octagon?
A600o
B180o
C540o
D360o
E 2489o
F 1080o
7. duodecagon
A87
B54
C15
D20
E 9
F 34
8. pentadecagon
A90
B44
C10
D61
E 37
F 29
7. D
8.F
So all correct?
Give the number of diagonals for the following polygons:
1. triangle
A0
B1
C2
D3
E 4
F 5
2. quadrilateral
A1
B2
C3
D4
E 5
F 6
3. pentagon
A0
B1
C2
D3
E 4
F 5
4. hexagon
A7
B3
C2
D9
E 12
F 8
5. octagon
A20
B11
C4
D7
E 13
F 5
6. decagon
A22
B5
C35
D8
E 11
F 14
1.A
2.B
3. F
4. D
5.A
6.C
20. is D
Having trouble with Q18
20. How many girls played only baseball?
A7
B2
C3
D4
E 10
F 1
18. How many students played soccer and baseball, but not tennis?
A5
B10
C3
D4
E 7
F 13
I entered in all of my answers and got #13,14,18 and #20 wrong. Can you please help me
#1. If I have two points, A and B, name at least four geometric elements I can create with only the two points.
I answered: Ray, Line, Line Segment
I need 1 more... please help
For problems 13 through 14 your complex statement is "Baseball players are athletes."
13. Which of the following is accurate?
AThe inverse of the statement is "If someone is a baseball player then someone is an athlete."
BThe statement is "If someone is an athlete, then they are a baseball player."
CThe statement can never be true.
DBaseball players all have great teeth and gums.
E The inverse of the statement is not true.
F The converse is: "Joey is a baseball player, and he is not an athlete."
14. What is q?
ASomeone is an athlete.
BSomeone is a baseball player.
CAll baseball players are athletes.
DAll athletes are baseball players.
E Baseball player
F Athlete
25 students played soccer
4 boys played soccer and baseball
3 girls played soccer and baseball
10 boys played baseball
4 girls played baseball
9 students played tennis
3 boys played soccer and tennis
3 girls played soccer and tennis
3 boys played baseball and tennis
1 girl played baseball and tennis
1 boy played all three sports
1 girl played all three sports
Hints on the diagram (highlight the following paragraph with your mouse to see them):
<start highlighting here> Notice that the counts don't make sense as they are, because they're all inclusive. The soccer count includes every who plays soccer, even the students in the soccer and baseball, soccer and tennis, and the all three sport counts. The count for soccer and baseball includes the students who play all three sports. So you'll need to correct from the inside outward...first subtract the boy and girl who play all three sports from all the other counts, then subtract the dual-sport counts from the single sport counts.
Put another way, this is like the gecko problem--the entire soccer circle including the soccer and baseball students and the soccer and tennis students and the students who play soccer and baseball and tennis, will add up to 25.<end highlighting here>
18. How many students played soccer and baseball, but not tennis?
A5
B10
C3
D4
E 7
F 13
20. How many girls played only baseball?
A7
B2
C3
D4
E 10
F 1
How did you get D for 10..?
It's E... I corrected myself
How do you do Question 10?
Question 12, I got D 60
Question 13, C 90.
Question 14, D 60.
Q15, E 43.
Just realized how to do it the RIGHT way haha, please check to be sure they are correct please! thanks
question 11. B??
Question 11.. 122 E!
because 180-58=122
How do you make a diagram?
1. 87
A77
B24
C93
D47
E 31
F 48
2. 160
A10
B20
C30
D40
E 50
F 60
3. 68
A851
B295
C302
D574
E 112
F 638
4. 174
A3
B4
C5
D 6
E 7
F 8
5. a
A180-a
B180/2
C 179*a
D 179+a
E 60
F pi
Find the complementary angles of the following.
6. 53
A90
B32
C 25
D 45
E 18
F 37
7. 12
A46
B78
C98
D31
E 52
F 64
8. 73.5
A16.5
B34.2
C29.4
D17.7
E 57.9
F 11.3
9. 23.7
A66.3
B70.1
C42.5
D83.9
E 54.8
F 36.2
10. a
A90/a
Ba-90
Ca/2
D90-a
E 90-2
F a^2
Two of the angles are listed. Find the measure of the third angle in each triangle. Similar to example 6
11. 16,42
A256
B421
C107
D510
E 122
F 329
12. 90, 30
A23
B42
C47
D60
E 71
F 89
13. 43, 118
A12
B34
C19
D57
E 11
F 27
14. 60, 60
A15
B90
C29
D60
E 30
F 45
15. 14, 123
A73
B25
C38
D19
E 43
F 13
16. 68, 86
A45
B56
C26
D19
E 32
F 82
17. 55, 77
A18
B37
C62
D57
E 20
F 48
18. a, (a + 80)
A100 - 2a
B112 - 7a
C182 - 2a
D254 - 5a
E 311 - 3a
F 302 - 1a
19. x, (x + 20)
A189 - 7x
B167 - 1x
C114 - 5x
D160 - 2x
E 124 - 2x
F 142 - 1x
20. m, 2m
A172 - 2m
B187 - 7m
C124 - 4m
D143 - 1m
E 164 - 9m
F 180 - 3m
1. C
2. B
3. E
4. D
5. D
6. F
7. B
8. A
9. A
10. B
11. D
12. A
13. D
14. B
15. A
16. C
17. F
18. A
19. D
20. F
Please help me check and if i get them wrong please help me!
I dont understand what you are asking
For Q13 I put C and it was incorrect.. For Q14 I put F and got it wrong.
Q18 I put B and got it wrong.
Q20 D I also got wrong
I should've waited for help
For Q17-20
17. E
18.F
19.B
20.A
?????
14. What is q?
ASomeone is an athlete.
BSomeone is a baseball player.
CAll baseball players are athletes.
DAll athletes are baseball players.
E Baseball player
F Athlete
That is all I know for question 14
Question 14, F?
Q13, B? Sorry for so many posts