Exterior of a 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)

Exterior of a triangle is an area which lies outside the boundaries of a triangle. Or In order words, Exterior of a triangle is an area which lies outside the three sides of a triangle. Or we can also say that; An area outside the boundaries or perimeter of a triangle is known as exterior of a triangle Example 1: In the below diagram: Entire area highlighted in green is referred to as Exterior of triangle ABC. Example 2: In the below diagram: Points P, Q, R, S & T lies in the exterior of triangle ABC.