Question on geometry triangle and incenter
50417
Prove that the triangles $ABC$ and $AB^{'}C^{'}$ have the same incentre.
19443
Drawing a triangle
40596
Proving a relation between inradius ,circumradius and exradii in a triangle
112896
Construct the triangle with given angle bisectors
94091
In $ \triangle ABC$ show that $ 1 \lt \cos A + \cos B + \cos C \le \frac 32$
63899
How to find if a point is inside a mesh?
129002
Number of triangles formed by $m$ lines
45584
In $\triangle ABC$ with $AB=AC$ and $\angle BAC=20^\circ$, $D$ is on $AC$, with $BC=AD$. Find $\angle DBC$. Where's my error?
134764
Triangle Inequality question with fractions
121084
Right triangles and tangent lines
37407
Area of intersection of two Annulus
154274
How many triangles are there in the picture?
83034
Triangle inequality square #2
85860
Pascal's triangle in tikz
10772
Equilateral triangle inscribed in a ellipse
158992
Inside and Out radius?
70968
How do CSS triangles work?