Learning Objectives:

__Math Tutoring on Triangles and Congruence__

*Interior Angles of a Triangle:*

The **Interior Angles** of a triangle are the angles inside the triangle formed by the sides.The vertices are the points where the sides of a triangle meet. **Vertex**** **is singular form of **Vertices.**

*Exterior Angles of a Triangle:*

The **Exterior Angles** of a triangle are the angles that form a linear pair with the interior angles by extending the sides of a triangle.

*Congruent Triangles: *

Two triangles are **Congruent**** **if and only if corresponding angles and sides are **Congruen****t.**When referring to corresponding part of triangles it is called corresponding parts of **Congruent Triangles** are **Congruent.**

*Side-Side-Side Postulate or SSS Postulate:*

If three sides of one triangle are **Congruent** to three sides of another triangle, then the triangles are **Congruent.**

*Side-Angle-Side Postulate:*

If two sides and the included angle of one triangle are **Congruent**** **to two sides and the included angle of another triangle, then the triangles are **Congruent.**

*Angle-Side-Angle Postulate:*

If two angles and the included side of one triangle are **Congruent** to two angles and the included side of another triangle, then the triangles are **Congruent.**

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**Hook questions:**

*1. **What are the Exterior or Interior Angles of a triangle?*

*2. **What are the Congruent Triangles? What are the different postulates of Congruence?*

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