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====== [[Congruence in triangles – SSS Rule]] ======

====== [[Congruence in triangles – SSS Rule]] ======

Investigating the possibility of congruence if three sides of a triangle are congruent.

Investigating the possibility of congruence if three sides of two triangles are congruent.

====== [[Congruence in triangles – SAS Rule]] ======

====== [[Congruence in triangles – SAS Rule]] ======

====== [[Introduction to similar triangles|Introduction to similar triangles]] ======

====== [[Introduction to similar triangles|Introduction to similar triangles]] ======

Concept of similarity is introduced and investigated by comparing triangles and their elements.

Concept of similarity is introduced and investigated by comparing elements of two triangles.

==== Concept # 5. Tests for similarity ====

==== Concept # 5. Tests for similarity ====