Stage 16 · Quadrilaterals & Polygons

16.3.5 Testing for a Parallelogram from the Diagonals

16.3 Point Symmetry and Tests for the Parallelogram

Point 5 of 5

16.3.5 Testing for a Parallelogram from the Diagonals

Core idea

Once the two diagonals bisect each other, the four vertices are bound to form a parallelogram

Module goal. Introduce point symmetry as a fresh way of seeing symmetry, explain why a parallelogram has it, and systematically build up the various ways to test for one
eastmath.com · 16.3 Point Symmetry and Tests for the Parallelogram · 16.3.5 Testing for a Parallelogram from the Diagonals