Triangles and Congruence

This concept introduces triangles and their properties. We learn to classify triangles, and learn about angle relationships in triangles. We also learn about congruence of triangles, and some special types of triangles.

The concept is broken into smaller topics, which makes it easier and much more fun for students. The topics are listed below:-

Angle Relationships in Triangles

In this topic, we learn to apply theorems to the interior and exterior angles of triangles.

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Congruent Triangles

In this topic, we learn to use properties of congruent triangles. We also prove triangles congruent using the definition of congruence.

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Isosceles and Equilateral Triangles

In this topic, we learn to prove theorems about isosceles and equilateral triangles and apply the properties of equilateral and isosceles triangles to solve problems.

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Triangle Congruence: CPCTC

In this topic, we use CPCTC to prove parts of triangles congruent.

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Triangle Congruence: SSS, SAS, ASA, AAS, and HL

In this topic, we apply SSS, SAS, ASA, AAS, and HL to prove triangles congruent and solve problems.

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Triangles Classification

In this topic, we learn triangle classification to find angle measures and side lengths.

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