Question

Orthocentre Geometry Proof

score 699 · Answer 1 · 2016-09-30 00:12:27

699

Views

Orthocentre Geometry Proof

Published on 30 Sep 2016 - 0:12

score 520 · Answer 2 · 2016-09-30 16:50:14

520

Views

How to find one corner of an equilateral triangle in an cartesian system

Published on 30 Sep 2016 - 16:50

score 76 · Answer 3 · 2016-09-30 20:24:30

76

Views

In $\triangle ABC$, height $h_a=2m$ and perimeter$=7m$, find maximum height $h_b$.

Published on 30 Sep 2016 - 20:24

score 317 · Answer 4 · 2026-04-04 02:32:07

317

Views

Coordinate free proof of height of intersection of two triangles with common base

Published on 04 Apr 2026 - 2:32

score 160 · Answer 5 · 2026-03-26 01:16:37

160

Views

Inequality based on triangle: $\frac{3}{2}\le\frac{a}{b+c}+\frac{b}{c+a}+\frac{c}{a+b}<2$

Published on 26 Mar 2026 - 1:16

score 2.6k · Answer 6 · 2016-10-02 10:57:52

2.6k

Views

If $I$ is the incentre of $\triangle ABC$ and $AI$ meets the circumcircle at $D$, the prove that $DB = DC = DI$.

Published on 02 Oct 2016 - 10:57

score 22.3k · Answer 7 · 2026-04-05 16:07:00

22.3k

Views

Find area of the triangle ABC, given the coordinates of vertices in plane

Published on 05 Apr 2026 - 16:07

score 134 · Answer 8 · 2026-03-28 16:56:32

134

Views

Cyclic Quadrilaterals Advanced

Published on 28 Mar 2026 - 16:56

score 248 · Answer 9 · 2016-10-03 03:25:43

248

Views

How and why did we extended the domain and definition of trigonometric function from the angles of right triangle to the angles of any triangle?

Published on 03 Oct 2016 - 3:25

score 37 · Answer 10 · 2026-03-27 03:57:47

37

Views

Using co-planarity to determine the points inside a triangle

Published on 27 Mar 2026 - 3:57

score 80 · Answer 11 · 2016-10-04 02:57:24

80

Views

Find the point that makes two triangle equal

Published on 04 Oct 2016 - 2:57

score 54 · Answer 12 · 2016-10-04 05:50:31

54

Views

A simple problem related with the following triangle

Published on 04 Oct 2016 - 5:50

score 56 · Answer 13 · 2016-10-04 12:33:37

56

Views

Prove that $\triangle BAD$ is isosceles & $AC^2+AD^2=4AB^2$

Published on 04 Oct 2016 - 12:33

score 2k · Answer 14 · 2026-03-26 17:52:19

2k

Views

Unit square inside triangle.

Published on 26 Mar 2026 - 17:52

score 259 · Answer 15 · 2016-10-04 16:06:34

259

Views

No of right triangles possible for a given in-radius R with integer sides?

Published on 04 Oct 2016 - 16:06

List Question

Orthocentre Geometry Proof

How to find one corner of an equilateral triangle in an cartesian system

In $\triangle ABC$, height $h_a=2m$ and perimeter$=7m$, find maximum height $h_b$.

Coordinate free proof of height of intersection of two triangles with common base

Inequality based on triangle: $\frac{3}{2}\le\frac{a}{b+c}+\frac{b}{c+a}+\frac{c}{a+b}<2$

If $I$ is the incentre of $\triangle ABC$ and $AI$ meets the circumcircle at $D$, the prove that $DB = DC = DI$.

Find area of the triangle ABC, given the coordinates of vertices in plane

Cyclic Quadrilaterals Advanced

How and why did we extended the domain and definition of trigonometric function from the angles of right triangle to the angles of any triangle?

Using co-planarity to determine the points inside a triangle

Find the point that makes two triangle equal

A simple problem related with the following triangle

Prove that $\triangle BAD$ is isosceles & $AC^2+AD^2=4AB^2$

Unit square inside triangle.

No of right triangles possible for a given in-radius R with integer sides?

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