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11. Which is the contrapositive of the following statement? If quadrilateral ABCD is a rectangle, then quadrilateral ABCD is a square. I'm pretty sure it's B.
A If quadrilateral ABCD is a square, then quadrilateral ABCD is a rectangle.
B If quadrilateral ABCD is not a square, then quadrilateral ABCD is not a rectangle.
C If quadrilateral ABCD is not a rectangle, then quadrilateral ABCD is not a square.
D If quadrilateral ABCD is not a square, then quadrilateral ABCD is a rectangle.
12. How does the sum of the exterior angles of a square compare to the sum of the exterior angles of a pentagon? I don't know how to figure this one out. I know that the outer angles of a square add up to 1080.
A The sum of the exterior angles of a square is greater.
B The sum of the exterior angles of a pentagon is greater.
C The two sums are equal.
D There is not enough information to compare the two sums.
13. Which of the following has four congruent sides? 99.999999999999% sure it's C.
A a rectangle
B a kite
C a rhombus
D a trapezoid
17. The volume of a cone is 218 cubic centimeters and the height of the cone is 13 centimeters. What is the radius of the cone to the nearest whole number? I got A.
A 4 cm
B 5 cm
C 8 cm
D 16 cm
18. In the diagram shown, a 12-foot slide is attached to a swing set. The slide makes an angle with the swing set. Which answer most closely represents the height of the top of the slide? I got B.
A 5.0 feet
B 5.6 feet
C 10.9 feet
D 25.7 feet
19. A regular hexagon is inscribed in a circle with a radius of 10 meters (as shown). What is the length of each side of the hexagon? D?
A 5 meters
B meters
C 10 meters
D Cannot be determined
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