GraphicMaths - Triangles

There are 7 types of triangle divided into 3 main families - equilateral, isosceles, and scalene.

Congruent triangles

GraphicMaths - Star polygons Polygon, Regular polygon, Regular hexagon

Finding arc length by integration, by Martin McBride, Graphic maths, Mar, 2024

GraphicMaths - Area and perimeter of triangles

Isosceles Triangle: Definition, Properties, Angles, Area, Formula, Examples - Kunduz

GraphicMaths - Area and perimeter of triangles

Squareroot Symbol Graphic Maths' Men's T-Shirt

A Bird's Eye View of Linear Algebra: Systems of Equations, Linear Regression and Neural Networks, by Rohit Pandey

Beautiful Pythagorean proofs you might have missed, Alex Lin

3D foldables for any subject – One of Thirty Voices

Circle theorem - two radii form an isosceles triangle

Isosceles Triangle: Definition, Properties, Angles, Area, Formula, Examples - Kunduz

GCSE Higher Maths Trigonometry - sine rule