Question

How to simplify this formula

score 81 · Answer 1 · 2026-04-07 16:54:47

81

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How to simplify this formula

Published on 07 Apr 2026 - 16:54

score 959 · Answer 2 · 2026-04-15 20:00:36

959

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Can a triangle be divided into four similar triangles such that not all four of the triangles are congruent to each other?

Published on 15 Apr 2026 - 20:00

score 682 · Answer 3 · 2026-05-10 18:44:33

682

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In $\triangle ABC, AB = 28, BC = 21$ and $CA = 14$. Points $D$ and $E$ are on $AB$ with $AD = 7$ and $\angle ACD = \angle BCE$

Published on 10 May 2026 - 18:44

score 50 · Answer 4 · 2026-04-10 06:19:35

50

Views

How to calculate triangle's angle

Published on 10 Apr 2026 - 6:19

score 235 · Answer 5 · 2026-05-02 19:16:15

235

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How to find the dot product using the law of cosines

Published on 02 May 2026 - 19:16

score 702 · Answer 6 · 2026-04-15 21:53:08

702

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$4$ points in order $A,B,C,D$ lie on a circle with the extension of $AB$ meeting the extension of $DC$ at $E$ and that of $AD$ and $BC$ at $F$.

Published on 15 Apr 2026 - 21:53

score 56 · Answer 7 · 2026-04-12 18:46:07

56

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Area of a triangle using determinants of side lengths (not coordinates of vertices)

Published on 12 Apr 2026 - 18:46

score 321 · Answer 8 · 2026-04-17 01:34:48

321

Views

Similar Triangles ratio of medians equal to ratio of angle bisectors?

Published on 17 Apr 2026 - 1:34

score 144 · Answer 9 · 2026-04-11 08:49:41

144

Views

Spring triangle problem

Published on 11 Apr 2026 - 8:49

score 651 · Answer 10 · 2026-04-15 02:42:33

651

Views

The diagram shows an equilateral triangle $ADE$ inside a square $ABCD$ . What is the value of $\frac{[\Delta ADE]}{[\Delta DEC]}$ .

Published on 15 Apr 2026 - 2:42

score 269 · Answer 11 · 2026-04-23 00:44:18

269

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A $\Delta ABC$ has vertices lying on a circle $w$ of radius $1$, with $\angle BAC = 60^\circ$. A circle with center $I$ is inscribed in $\Delta ABC$.

Published on 23 Apr 2026 - 0:44

score 453 · Answer 12 · 2026-05-10 18:45:49

453

Views

In $\Delta ABC$, $AB = 14, BC = 16, AC = 26$. $M$ is the midpoint of $BC$ and $D$ is the point on $BC$ such that $AD$ bisects $\angle BAC$.

Published on 10 May 2026 - 18:45

score 32 · Answer 13 · 2026-04-23 00:46:05

32

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Let $P$ be a point on $DE$ and let the extensions of $BP$ and $CP$ meet the sides $AC$ and $AB$ at $G$ and $F$ respectively.

Published on 23 Apr 2026 - 0:46

score 509 · Answer 14 · 2026-04-23 00:44:18

509

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In $\Delta ABC$ , $\angle A = 20^\circ, \angle C = 90^\circ$. $O$ is a point on $AB$ and $D$ is the midpoint of $OB$ . Find $\angle BCD$ .

Published on 23 Apr 2026 - 0:44

score 763 · Answer 15 · 2026-04-23 00:43:33

763

Views

In $\Delta ABC , D$ and $E$ are midpoints of the sides $AB$ and $AC$ respectively, $CD$ and $BE$ intersect at $P$ with $\angle BPC = 90^\circ$.

Published on 23 Apr 2026 - 0:43

List Question

How to simplify this formula

Can a triangle be divided into four similar triangles such that not all four of the triangles are congruent to each other?

In $\triangle ABC, AB = 28, BC = 21$ and $CA = 14$. Points $D$ and $E$ are on $AB$ with $AD = 7$ and $\angle ACD = \angle BCE$

How to calculate triangle's angle

How to find the dot product using the law of cosines

$4$ points in order $A,B,C,D$ lie on a circle with the extension of $AB$ meeting the extension of $DC$ at $E$ and that of $AD$ and $BC$ at $F$.

Area of a triangle using determinants of side lengths (not coordinates of vertices)

Similar Triangles ratio of medians equal to ratio of angle bisectors?

Spring triangle problem

The diagram shows an equilateral triangle $ADE$ inside a square $ABCD$ . What is the value of $\frac{[\Delta ADE]}{[\Delta DEC]}$ .

A $\Delta ABC$ has vertices lying on a circle $w$ of radius $1$, with $\angle BAC = 60^\circ$. A circle with center $I$ is inscribed in $\Delta ABC$.

In $\Delta ABC$, $AB = 14, BC = 16, AC = 26$. $M$ is the midpoint of $BC$ and $D$ is the point on $BC$ such that $AD$ bisects $\angle BAC$.

Let $P$ be a point on $DE$ and let the extensions of $BP$ and $CP$ meet the sides $AC$ and $AB$ at $G$ and $F$ respectively.

In $\Delta ABC$ , $\angle A = 20^\circ, \angle C = 90^\circ$. $O$ is a point on $AB$ and $D$ is the midpoint of $OB$ . Find $\angle BCD$ .

In $\Delta ABC , D$ and $E$ are midpoints of the sides $AB$ and $AC$ respectively, $CD$ and $BE$ intersect at $P$ with $\angle BPC = 90^\circ$.

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