Algebra - Geometry: Area of a Triangle

Similar triangles | Similarity | Geometry | Khan Academy

Triangle angle example 1 | Angles and intersecting lines | Geometry | Khan Academy

Area of a Parallelogram

Area of a parallelogram | Perimeter, area, and volume | Geometry | Khan Academy

Proving a Quadrilateral a Parallelogram | Geometry Proof How To Help

Geometry: Compass Constructions (Simplifying Math)

Geometry Construction: Rotating a Figure by Hand

Similarity postulates | Similarity | Geometry | Khan Academy

Similar triangle example problems | Similarity | Geometry | Khan Academy

Similarity example problems | Similarity | Geometry | Khan Academy

NCEA Maths Level 1 Geometric Reasoning: Angles Within Circles

CIRCLE GEOMETRY (THEOREMS AND THEIR APPLICATION)

Circles: radius, diameter, circumference and Pi | Geometry | Khan Academy