Question

Ceva's theorem applied on a triangle but I am stuck on a step.

score 50 · Answer 1 · 2019-11-08 09:28:12

50

Views

Ceva's theorem applied on a triangle but I am stuck on a step.

Published on 08 Nov 2019 - 9:28

score 54 · Answer 2 · 2019-11-09 10:29:42

54

Views

Ratio of areas of ABJ to BCDE

Published on 09 Nov 2019 - 10:29

score 52 · Answer 3 · 2026-02-23 08:27:05

52

Views

Is there a name for the 1st isodynamic point of the contact triangle?

Published on 23 Feb 2026 - 8:27

score 163 · Answer 4 · 2019-11-10 06:08:10

163

Views

How to find the remaining area of equilateral triangle if 3 circle sectors of radius R1, R2, R3 are given.

Published on 10 Nov 2019 - 6:08

score 125 · Answer 5 · 2019-11-10 18:22:56

125

Views

Length of sides of triangles in terms of x and d

Published on 10 Nov 2019 - 18:22

score 150 · Answer 6 · 2019-11-10 18:50:36

150

Views

Show that if the centres of the circumscribed circles of the triangles $DEF$ and $ABC$ coincide, then $ABC$ is an equilateral triangle.

Published on 10 Nov 2019 - 18:50

score 112 · Answer 7 · 2026-02-23 08:24:04

112

Views

Proving concurrency of point reflections in a triangle

Published on 23 Feb 2026 - 8:24

score 52 · Answer 8 · 2026-04-02 19:22:24

52

Views

What geometric/trigonometric reasoning was used to deduce that $\theta_1 = \theta_0 - \theta$ and $(-\theta_2) = \theta_0 + \theta$?

Published on 02 Apr 2026 - 19:22

score 84 · Answer 9 · 2019-11-12 17:43:15

84

Views

Triangle $ABC$ of sides $a$ and $b$ - Prove $\frac{a\cos A + b\cos B}{a\cos B + b\cos A} = \cos(A - B)$

Published on 12 Nov 2019 - 17:43

score 45 · Answer 10 · 2019-11-13 02:47:07

45

Views

On the relations between area and bisector of a triangle.

Published on 13 Nov 2019 - 2:47

score 312 · Answer 11 · 2026-02-23 08:27:02

312

Views

What's the distance between the centroid of a scalene triangle and a point on its edge, at a given angle?

Published on 23 Feb 2026 - 8:27

score 208 · Answer 12 · 2019-11-14 06:54:14

208

Views

Find a triangle such that : area are natural number and sides is prime numbers

Published on 14 Nov 2019 - 6:54

score 49 · Answer 13 · 2019-11-14 10:52:59

49

Views

Find the value of $k$ such that : $S_{ABC}=kS_{RST}$

Published on 14 Nov 2019 - 10:52

score 41 · Answer 14 · 2019-11-17 10:45:15

41

Views

Determine the maximum percentage that circle $R$ can take up of circle $H$

Published on 17 Nov 2019 - 10:45

score 81 · Answer 15 · 2019-11-17 13:43:46

81

Views

Circle and right triangle

Published on 17 Nov 2019 - 13:43

List Question

Ceva's theorem applied on a triangle but I am stuck on a step.

Ratio of areas of ABJ to BCDE

Is there a name for the 1st isodynamic point of the contact triangle?

How to find the remaining area of equilateral triangle if 3 circle sectors of radius R1, R2, R3 are given.

Length of sides of triangles in terms of x and d

Show that if the centres of the circumscribed circles of the triangles $DEF$ and $ABC$ coincide, then $ABC$ is an equilateral triangle.

Proving concurrency of point reflections in a triangle

What geometric/trigonometric reasoning was used to deduce that $\theta_1 = \theta_0 - \theta$ and $(-\theta_2) = \theta_0 + \theta$?

Triangle $ABC$ of sides $a$ and $b$ - Prove $\frac{a\cos A + b\cos B}{a\cos B + b\cos A} = \cos(A - B)$

On the relations between area and bisector of a triangle.

What's the distance between the centroid of a scalene triangle and a point on its edge, at a given angle?

Find a triangle such that : area are natural number and sides is prime numbers

Find the value of $k$ such that : $S_{ABC}=kS_{RST}$

Determine the maximum percentage that circle $R$ can take up of circle $H$

Circle and right triangle

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