H HallsofIvy Elite Member Joined Jan 27, 2012 Messages 6,873 Nov 21, 2020 #2 The base angles of an isosceles triangle have the same measure. The angles in a triangle sum to 180 degrees.

The base angles of an isosceles triangle have the same measure. The angles in a triangle sum to 180 degrees.

Harry_the_cat Senior Member Joined Mar 16, 2016 Messages 2,111 Nov 21, 2020 #3 Use the info Halls gave you to form an equation, then solve it.