Question

Finding the radius of the circle confusion

score 69 · Answer 1 · 2026-03-28 21:57:09

69

Views

Finding the radius of the circle confusion

Published on 28 Mar 2026 - 21:57

score 159 · Answer 2 · 2023-05-04 06:03:09

159

Views

Number of scalene / integral sided triangles possible

Published on 04 May 2023 - 6:03

score 32 · Answer 3 · 2023-05-05 13:49:08

32

Views

The effect on the total area of two equal triangles when decreasing/increasing the height by the same amount.

Published on 05 May 2023 - 13:49

score 132 · Answer 4 · 2023-05-06 16:30:41

132

Views

HMMT 2022 February Geometry Round Problem 1

Published on 06 May 2023 - 16:30

score 70 · Answer 5 · 2023-05-06 17:24:15

70

Views

HMMT February 2022 Geometry Round Problem 3 - what did I do wrong?

Published on 06 May 2023 - 17:24

score 160 · Answer 6 · 2023-05-07 03:54:15

160

Views

Is $\cos^2A+\cos^2B+\cos^2C+2 \cos A \cos B \cos C=1$ both Necessary and Sufficient for a triangle

Published on 07 May 2023 - 3:54

score 53 · Answer 7 · 2023-05-08 06:13:41

53

Views

To find perpendicular of right angled triangle

Published on 08 May 2023 - 6:13

score 144 · Answer 8 · 2026-03-26 21:25:33

144

Views

Cutting a rectangular piece from a right triangle

Published on 26 Mar 2026 - 21:25

score 200 · Answer 9 · 2023-05-08 12:57:14

200

Views

Conjecture: For $a,b,c,A,s$ the sides, area, and semi-perimeter of a triangle, and $x\ge2$: $a+b-c\ge s(2/3)^{(x+1)/(x-1)}(\frac{3^{3/2}A}{s^2})^x$

Published on 08 May 2023 - 12:57

score 128 · Answer 10 · 2026-02-23 10:06:16

128

Views

In $\triangle ABC$, the circumcenter is $O$, the interior center is $I$, and center of gravity is $G$. If $IG \parallel BC$, prove $OI \perp AI$.

Published on 23 Feb 2026 - 10:06

score 33 · Answer 11 · 2023-05-09 19:50:45

33

Views

Triangle contained in another triangle, sharing one angle with constraints on sides

Published on 09 May 2023 - 19:50

score 40 · Answer 12 · 2026-03-25 20:41:28

40

Views

Need Help for proofs in the Basel problem.

Published on 25 Mar 2026 - 20:41

score 90 · Answer 13 · 2026-03-26 07:35:32

Consider equilateral triangle ABC and points D and E such that $BD = \frac{BC} 3$. If DF is perepndicular on AD, F belongs to AC, prove that EF = AD.

score 73 · Answer 14 · 2023-05-13 18:21:08

73

Views

In the triangle $\triangle ABC$, $AC=BC$, $AH$ is the height, $\tan(\angle BAC) = \frac{24}{7}$. Find the length $AB$.

Published on 13 May 2023 - 18:21

score 75 · Answer 15 · 2026-04-09 00:16:15

75

Views

Euclid's Proof of XI-22 is Incorrect.

Published on 09 Apr 2026 - 0:16

List Question

Finding the radius of the circle confusion

Number of scalene / integral sided triangles possible

The effect on the total area of two equal triangles when decreasing/increasing the height by the same amount.

HMMT 2022 February Geometry Round Problem 1

HMMT February 2022 Geometry Round Problem 3 - what did I do wrong?

Is $\cos^2A+\cos^2B+\cos^2C+2 \cos A \cos B \cos C=1$ both Necessary and Sufficient for a triangle

To find perpendicular of right angled triangle

Cutting a rectangular piece from a right triangle

Conjecture: For $a,b,c,A,s$ the sides, area, and semi-perimeter of a triangle, and $x\ge2$: $a+b-c\ge s(2/3)^{(x+1)/(x-1)}(\frac{3^{3/2}A}{s^2})^x$

In $\triangle ABC$, the circumcenter is $O$, the interior center is $I$, and center of gravity is $G$. If $IG \parallel BC$, prove $OI \perp AI$.

Triangle contained in another triangle, sharing one angle with constraints on sides

Need Help for proofs in the Basel problem.

Consider equilateral triangle ABC and points D and E such that $BD = \frac{BC} 3$. If DF is perepndicular on AD, F belongs to AC, prove that EF = AD.

In the triangle $\triangle ABC$, $AC=BC$, $AH$ is the height, $\tan(\angle BAC) = \frac{24}{7}$. Find the length $AB$.

Euclid's Proof of XI-22 is Incorrect.

Trending Questions

Popular # Hahtags

Popular Questions