Gr 12 (Euclidean Geometry)

1. Revise earlier work on the necessary and sufficient conditions for polygons to be similar.

2. Prove :

•  **that a line drawn parallel to one side of a triangle divides the other two sides proportionally (and the Mid-point Theorem as a special case of the converse of this theorem);

•  **that equiangular triangles are similar;

• that triangles with sides in proportion are similar

• •The proofs of theorems labelled with ** are examinable.