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**666 bro****Member**- From: Flatland
- Registered: 2019-04-26
- Posts: 621

CG#111: the coordinates of third vertex are ( 0, ±3√(3) ).

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,542

Hi,

Neat work!

CG # 112. Find which type of quadrilateral with vertices (0,-1), (6,7), (-2,3), and (8,3) is formed.

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.

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**666 bro****Member**- From: Flatland
- Registered: 2019-04-26
- Posts: 621

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,542

Neat work!

CG#113. Find the coordinates of the circumcentre of the triangle whose vertices are (8,6), (8,-2), and (2,-2).Also find its circumradius.

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.

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**666 bro****Member**- From: Flatland
- Registered: 2019-04-26
- Posts: 621

*Last edited by 666 bro (2020-07-11 01:08:57)*

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,542

Hi,

Well tried!

CG # 114. Write the coordinates of the center of a circle passing through the points (9,3), (7,-1), and (1,-1). Find the radius of the circle.

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.

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**666 bro****Member**- From: Flatland
- Registered: 2019-04-26
- Posts: 621

*Last edited by 666 bro (2020-07-17 15:27:14)*

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,542

Hi,

Good work!

CG # 115. (a) A (6,0) is a point on a circle with center (0,0). Find the radius of the circle.

(b) Show that

are the points on this circle.Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**666 bro****Member**- From: Flatland
- Registered: 2019-04-26
- Posts: 621

*Last edited by 666 bro (2020-07-24 14:47:08)*

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,542

Hi,

Neat work!

CG#116. Find the lengths AB, BC, AC in CG#115. Find

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

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**666 bro****Member**- From: Flatland
- Registered: 2019-04-26
- Posts: 621

*Last edited by 666 bro (2020-08-01 01:31:36)*

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,542

Hi,

Partially correct. Good work!

CG#117. Prove that the points A(1,-3), B(-3,0), and C(4,1) are the vertices of a right isosceles triangle.

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

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**666 bro****Member**- From: Flatland
- Registered: 2019-04-26
- Posts: 621

*Last edited by 666 bro (2020-08-07 21:24:14)*

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,542

Hi,

Neat work!

CG # 118. Show that A(6,4), B(5,-2), and C(7,-2) are the vertices of an isosceles triangle.

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

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**666 bro****Member**- From: Flatland
- Registered: 2019-04-26
- Posts: 621

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,542

Hi,

Neat work!

CG#119. Find the vales of k if the points A(k+1,2k), B(3k,2k+3), and C(5k-1,5k) are collinear.

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

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**666 bro****Member**- From: Flatland
- Registered: 2019-04-26
- Posts: 621

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,542

Hi,

Neat work!

CG#120. Name the type of quadrilateral formed, if any, by the following point and give reason for your answer.

(-1,-2), (1,0), (-1,2), and (-3,0).

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

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**666 bro****Member**- From: Flatland
- Registered: 2019-04-26
- Posts: 621

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,542

Hi,

Neat work!

CG#121. Name the type of quadrilateral formed, if any, by the following point and give reason for your answer.

(4,5), (7,6), (4,3), (1,2).

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

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**666 bro****Member**- From: Flatland
- Registered: 2019-04-26
- Posts: 621

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,542

Hi,

Almost correct. Good attempt.

CG#122. Name the type of quadrilateral formed, if any, by the following point and give reason for your answer.

(-3,5), (3,1), (0,3), (-1,-4).

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

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**666 bro****Member**- From: Flatland
- Registered: 2019-04-26
- Posts: 621

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,542

Well done!

CG#123. ABCD is a rectangle formed by the points A (-1,-1), B (-1,4), C (5,4), and D (5,-1). P, Q, R, and S are the mid-points of AB, BC, CD, and DA respectively. Is the quadrilateral PQRS a square, a rectangle, or a rhombus? Justify your answer.

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

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**666 bro****Member**- From: Flatland
- Registered: 2019-04-26
- Posts: 621

*Last edited by 666 bro (2020-09-18 16:33:40)*

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

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