Triangles.

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Presentation transcript:

Triangles

Types of Triangles Equilateral triangle: A triangle with three congruent (equal) sides and three equal angles These marks indicate equality.

Types of Triangles Isosceles triangle: A triangle with at least two congruent (equal) sides

This box indicates a right angle or a 90-degree angle. Types of Triangles Right triangle: Has only one right angle (90 degrees) This box indicates a right angle or a 90-degree angle.

Types of Triangles Scalene triangle: A triangle that has no congruent (equal) sides

Types of Triangles Name each type of triangle 2 4 1 3

Types of Triangles Name each type of triangle Right 4 2 Scalene 1 3 Equilateral Isosceles

Interior Angles Interior angles of a triangle always equal 180 degrees.

Example Find the missing angle xo 96o 39o