Interior Angles Of A Triangle Worksheet

Exterior angles solve for x equate the sum of the two sides with the exterior angle depicted as an algebraic expression.

Interior angles of a triangle worksheet. θ 180 50 70 60. These free geometry worksheets will introduce you to the triangle sum theorem as you find the measurements of the interior angles of a triangle. Set up an equation with the sum of the three angles equating it with 180 and solve for x.

In the triangle below we know two interior angles and want to find the third θ. Your first step should be to set up an equation where the sum of the angles adds up to. Solve for x in each of the triangles below.

Interior and exterior angles of a triangle displaying top 8 worksheets found for this concept. Triangle always add up to 180. Some of the worksheets for this concept are relationship between exterior and remote interior angles 4 the exterior angle theorem exterior angle triangle sum of the interior angles of a triangle 4 angles in a triangle exterior angles of a triangle 1 directions angles of triangles.

By subtracting the two known angles from 180 we find the missing angle. θ 50 70 180. 21 84 x 59 x 51 a 44 22 x 37 x 67 a 30 23 130 8x 4 3x 6 a 30 24 80 4x 17 x 23 a 35 3 create your own worksheets like this one with infinite geometry.

The triangle sum theorem states that the interior angles of a. Read more about how to find a missing angle in a triangle. Find the measure of angle a.

Sum of the interior angles of a triangle 2.