List questions from quadrilateral

Published on 23 Oct 2013 - 7:40

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What is the maximum area of a square inscribed in an equilateral triangle?

Published on 30 Oct 2013 - 14:05

668

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(PA)^2 + (PB)^2 +(PC)^2 + (PD)^2 is equal to?

Published on 18 Nov 2013 - 6:54

161

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How to integrate on an arbitary quadrilateral?

Published on 29 Nov 2013 - 2:03

4k

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Prove that the quadrilateral formed by connecting the midpoints of a quadrilateral is a parallelogram.

Published on 14 Dec 2013 - 23:34

64

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what $h_a$ in this triangle question.

Published on 04 Jan 2014 - 17:02

1.5k

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Cyclic quadrilateral with equal area and perimeter

Published on 04 Jan 2014 - 22:10

159

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Bicentric quadrilaterals

Published on 06 Jan 2014 - 10:07

402

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Quadrilateral geometry problem, couldn't solve it.

Published on 09 Jan 2014 - 5:27

5.1k

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Using vectors to prove midpoints bisect

Published on 14 Jan 2014 - 2:38

280

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If $ABCD$ is a cyclic quadrilateral, then $AC\cdot(AB\cdot BC+CD\cdot DA)=BD\cdot (DA\cdot AB+BC\cdot CD)$

Published on 23 Jan 2014 - 19:12

24.3k

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Why study quadrilaterals?

Published on 24 Jan 2014 - 17:37

2.9k

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Congruence of quadrilaterals given the sides

Published on 28 Jan 2014 - 12:34

1.6k

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When is $Ar(APD)=Ar(ABCD)$?

Published on 06 Feb 2014 - 14:11

2.5k

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How can I calculate two internal angles of a quadrilateral given the lengths of both diagonals and two opposite sides?

Published on 07 Feb 2014 - 21:08

List Question

Vertices of quadrilaterals

What is the maximum area of a square inscribed in an equilateral triangle?

(PA)^2 + (PB)^2 +(PC)^2 + (PD)^2 is equal to?

How to integrate on an arbitary quadrilateral?

Prove that the quadrilateral formed by connecting the midpoints of a quadrilateral is a parallelogram.

what $h_a$ in this triangle question.

Cyclic quadrilateral with equal area and perimeter

Bicentric quadrilaterals

Quadrilateral geometry problem, couldn't solve it.

Using vectors to prove midpoints bisect

If $ABCD$ is a cyclic quadrilateral, then $AC\cdot(AB\cdot BC+CD\cdot DA)=BD\cdot (DA\cdot AB+BC\cdot CD)$

Why study quadrilaterals?

Congruence of quadrilaterals given the sides

When is $Ar(APD)=Ar(ABCD)$?

How can I calculate two internal angles of a quadrilateral given the lengths of both diagonals and two opposite sides?

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