👉 Learn about congruent triangles theorems. Two or more triangles (or polygons) are said to be congruent if they have the ...

Prove two triangles are congruent by showing they satisfy one of four criteria. Find missing lengths by using the scale factor. The relationship between similar shapes may be expressed as a ratio.

A GCSE Maths video about congruence conditions for triangles. This video explores the SAS, SSS, ASA and RHS conditions, demonstrating how they can be identified to prove whether two triangles are ...

Proving that two polygons have the same area can be as easy as cutting them up and rearranging the pieces. Gina the geometry student stayed up too late last night doing her homework while watching The ...