Math Is Fun Forum

ganesh

Administrator

Registered: 2005-06-28

Posts: 33,022

Re: Coordinate Geometry

Hi,

Excellent!

CG#124. Prove that the points A(0,-1), B(-2,3), C(6,7), and D(8,3) are the vertices of a rectangle ABCD.

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It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 630

Re: Coordinate Geometry

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"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

ganesh

Administrator

Registered: 2005-06-28

Posts: 33,022

Re: Coordinate Geometry

Hi,

Good work!

CG#125. Show that the points A(1,3), B(2,6), C(5,7), and D(4,4) are the vertices of a rhombus.

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It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 630

Re: Coordinate Geometry

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

ganesh

Administrator

Registered: 2005-06-28

Posts: 33,022

Re: Coordinate Geometry

Hi,

Neat work!

CG # 126.  Find the slope of the line perpendicular to the line joining the points (6, 10)and (-8, 4).

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It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 630

Re: Coordinate Geometry

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

ganesh

Administrator

Registered: 2005-06-28

Posts: 33,022

Re: Coordinate Geometry

Good work!

CG # 127. If x(-4, 2), y(4, 6), and z(-4, -8) are three points, then find the angle between yx and yz.

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It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 630

Re: Coordinate Geometry

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

ganesh

Administrator

Registered: 2005-06-28

Posts: 33,022

Re: Coordinate Geometry

Keep trying.

CG # 128. If the coordinates of the midpoints of the sides of a triangle are (2, 2), (4, -6), and (6, 8), find its centroid.

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It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 630

Re: Coordinate Geometry

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

ganesh

Administrator

Registered: 2005-06-28

Posts: 33,022

Re: Coordinate Geometry

Hi,

Neat work!

CG#129. Find the co-ordinates of the incentre of the triangle whose vertices are A(8,-4), B(10,10), and C(-4,8).

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It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 630

Re: Coordinate Geometry

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

ganesh

Administrator

Registered: 2005-06-28

Posts: 33,022

Re: Coordinate Geometry

Hi,

Neat work!

CG # 130. Find the area of the quadrilateral ABCD whose vertices are (-8,4), (2,-2), (8,2), and (4,10).

---

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 630

Re: Coordinate Geometry

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

ganesh

Administrator

Registered: 2005-06-28

Posts: 33,022

Re: Coordinate Geometry

Hi,

Neat work!

CG#131. Find the ratio in which x + y = 5 divides AB, where A(6, -2) and B (4, 5) are two given points.

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It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 630

Re: Coordinate Geometry

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

ganesh

Administrator

Registered: 2005-06-28

Posts: 33,022

Re: Coordinate Geometry

Good work!

CG#132. Find the area of a triangle whose vertices are (5, 4), (3, 6), and (2, -5).

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It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Denominator

Member

Registered: 2009-11-23

Posts: 215

Re: Coordinate Geometry

Hi,

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ganesh

Administrator

Registered: 2005-06-28

Posts: 33,022

Re: Coordinate Geometry

Hi,

Neat work!

CG # 133. Find the equation of the line passing through the points (-3, 2) and (4, 3).

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It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 630

Re: Coordinate Geometry

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

ganesh

Administrator

Registered: 2005-06-28

Posts: 33,022

Re: Coordinate Geometry

Keep trying!

CG # 134. Find the equation of the line passing through the point (-2,8) and having a slope 2/3.

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It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 630

Re: Coordinate Geometry

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

irspow

Member

Registered: 2005-11-24

Posts: 1,055

Re: Coordinate Geometry

Last edited by irspow (2021-01-07 07:34:16)

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I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

ganesh

Administrator

Registered: 2005-06-28

Posts: 33,022

Re: Coordinate Geometry

Hi,

Neat work, 666 bro and irspow!

CG # 135. Find the equation of the line passing through the point (-2,-3) and perpendicular to the line joining the points (1,5) and (3,7).

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It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

irspow

Member

Registered: 2005-11-24

Posts: 1,055

Re: Coordinate Geometry

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I am at an age where I have forgotten more than I remember, but I still pretend to know it all.