If $D$ is tangent point of $BC$ with incircle of $ABC$ and $T$ is intersection of $A$-mixtilinear inclrcle with $(ABC)$, then $\angle BTA=\angle CTD$.
101249
If $J$ is tangent point of $GH$ with incircle of $FGH$ and $D$ is intersection of $F$-mixtilinear inclrcle with $(FGH)$, then $\angle FGH=\angle GDJ$.
132081
Geometrical interpretation of $(\sum_{k=1}^n k)^2=\sum_{k=1}^n k^3$
125763
If $\mathrm{tr}(A)=0$, then we have $A=BC-CB?$
53072
Sketch complex curve $z(t) = e^{-1t+it}$, $0 \le t \le b$ for some $b>0$
18913
How to find a basis for the intersection of two vector spaces in $\mathbb{R}^n$?
65964
Prove that the line joining the midpoint of parallel sides of a trapezium passes through the point of intersection of diagonals
144641
Tangents are drawn from the point $(\alpha,\beta)$ to the hyperbola $3x^2-2y^2=6$ and are inclined at angles $\theta$ and $\phi$ to the $x-$axis.
72157
Elementary proof of tangent half angle formula
69301
If $\int_{0}^{x}f(t)dt\rightarrow \infty$ as $|x|\rightarrow \infty\;,$ Then every line $y=mx$ Intersect $ y^2+\int_{0}^{x}f(t)dt=2$
62260
Rational Coordinates with two intersecting lines
147429
Set of points in $\mathbb{C}$ s.t. $z^{n-1} = \overline z$
133756
Geometric interpretation of $\det(A^T) = \det(A)$
12646
In acute angle triangle, prove that $\cos (A-B) \cos (B-C) \cos (C-A)\ge 8\cos A \cos B \cos C$
96590
Convex cyclic hexagon $ABCDEF$. Prove $AC \cdot BD \cdot CE \cdot DF \cdot AE \cdot BF \geq 27 AB \cdot BC \cdot CD \cdot DE \cdot EF \cdot FA$
90056
A synthetic geometrical proof required on a result regarding Isosceles triangles.
126561
Proof of equivalence of algebraic and geometric dot product?
88283
Proving the length of angle bisector