Question

We have sides $a,b,c$ of triangle $ABC$ which are equal to $\sqrt{6}, \sqrt{3}, 1$, Prove that angles $A=90+B$

score 55 · Answer 1 · 2026-04-22 06:23:53

55

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We have sides $a,b,c$ of triangle $ABC$ which are equal to $\sqrt{6}, \sqrt{3}, 1$, Prove that angles $A=90+B$

Published on 22 Apr 2026 - 6:23

score 40 · Answer 2 · 2026-04-12 14:29:47

40

Views

Finding $S_{ADE}:S_{DBCE}$ given that $\angle A = 30^\circ$

Published on 12 Apr 2026 - 14:29

score 380 · Answer 3 · 2026-04-16 08:09:07

380

Views

Drawing triangle with correct side length and angles

Published on 16 Apr 2026 - 8:09

score 136 · Answer 4 · 2026-04-12 14:00:07

136

Views

How to find length AF in this right triangle?

Published on 12 Apr 2026 - 14:00

score 552 · Answer 5 · 2026-04-18 11:44:32

552

Views

Number of right isosceles triangles that can be formed with points lying on the curve $8x^3+y^3+6xy=1$

Published on 18 Apr 2026 - 11:44

score 359 · Answer 6 · 2026-04-22 06:20:10

359

Views

In $\triangle ABC$, $AB = AC$ and $\angle B = 40^\circ$ . $D$ is a point on $AB$ produced such that $AD = BC$. Join $DC$. Find $\angle DCB$ .

Published on 22 Apr 2026 - 6:20

score 193 · Answer 7 · 2026-05-11 10:11:34

193

Views

Let $x,y,z$ are the lengths of sides of a triangle such that $x+y+z=2$. Find the range of $xy+yz+xz-xyz$ .

Published on 11 May 2026 - 10:11

score 142 · Answer 8 · 2026-04-11 10:04:56

142

Views

How to find $AL$ in a triangle with one side trisected?

Published on 11 Apr 2026 - 10:04

score 41 · Answer 9 · 2026-05-06 03:10:08

41

Views

Question about determine a point lies on a plane

Published on 06 May 2026 - 3:10

score 57 · Answer 10 · 2026-04-17 11:04:31

57

Views

$ABC$ is a triangle with perimeter of $20$; length of the opposite side of $A$ is $4$, Find $\sin(A/2):\cos((B-C)/2)$

Published on 17 Apr 2026 - 11:04

score 56 · Answer 11 · 2026-04-15 18:48:33

56

Views

$ABC$ is a triangle with $a,b$ and $c$ are the opposite sides of the angles. Let $(a^2+b^2):c^2=2019:1$, find $(\cot A+\cot B+\cot C:\cot A +\cot B)$

Published on 15 Apr 2026 - 18:48

score 613 · Answer 12 · 2026-04-13 04:12:20

613

Views

How do we find circumcenter and orthocenter in 3D and vectors, if the vector of vertices of the triangle are given?

Published on 13 Apr 2026 - 4:12

score 3k · Answer 13 · 2026-04-14 14:40:21

3k

Views

Prove that the sum of any two angles of a triangle is less than $180$ degrees without the notion of a parallel line.

Published on 14 Apr 2026 - 14:40

score 43 · Answer 14 · 2026-04-16 13:10:26

43

Views

Find the internal angle of the triangle between $\overrightarrow a \& \overrightarrow b $.

Published on 16 Apr 2026 - 13:10

score 130 · Answer 15 · 2026-04-14 05:15:53

130

Views

Angle bisectors and related circumcircles

Published on 14 Apr 2026 - 5:15

List Question

We have sides $a,b,c$ of triangle $ABC$ which are equal to $\sqrt{6}, \sqrt{3}, 1$, Prove that angles $A=90+B$

Finding $S_{ADE}:S_{DBCE}$ given that $\angle A = 30^\circ$

Drawing triangle with correct side length and angles

How to find length AF in this right triangle?

Number of right isosceles triangles that can be formed with points lying on the curve $8x^3+y^3+6xy=1$

In $\triangle ABC$, $AB = AC$ and $\angle B = 40^\circ$ . $D$ is a point on $AB$ produced such that $AD = BC$. Join $DC$. Find $\angle DCB$ .

Let $x,y,z$ are the lengths of sides of a triangle such that $x+y+z=2$. Find the range of $xy+yz+xz-xyz$ .

How to find $AL$ in a triangle with one side trisected?

Question about determine a point lies on a plane

$ABC$ is a triangle with perimeter of $20$; length of the opposite side of $A$ is $4$, Find $\sin(A/2):\cos((B-C)/2)$

$ABC$ is a triangle with $a,b$ and $c$ are the opposite sides of the angles. Let $(a^2+b^2):c^2=2019:1$, find $(\cot A+\cot B+\cot C:\cot A +\cot B)$

How do we find circumcenter and orthocenter in 3D and vectors, if the vector of vertices of the triangle are given?

Prove that the sum of any two angles of a triangle is less than $180$ degrees without the notion of a parallel line.

Find the internal angle of the triangle between $\overrightarrow a \& \overrightarrow b $.

Angle bisectors and related circumcircles

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