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Home >> Triangle >> Exterior Angles of Triangle >>

Exterior Angles of Triangle

Properties Types / Classification Perimeter of Equilateral Triangle Median of Triangle Interior of a Triangle
Exterior of a Triangle Altitude of a Triangle Interior Angles of Triangle Exterior Angles of Triangle Interior Opposite Angles of Triangle
Adjacent Interior Angle of Triangle Congruent Triangles Area of Triangle Area of Triangle by Heron's Formula Construction of Triangle (compass)

Before you study this topic, you are advice to read:

Exterior of a Triangle

Exterior Angles of a triangle are those angles which lie in the exterior of a triangle.

Following diagram further elaborates this:

In the following diagram:



∠ 1, ∠ 2 & ∠ 3 all are Exterior Angles of Triangle ABC



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