SOLUTION: If the measure of each base angle of an isoscele triangle is20°.why the vertex anglemustbe 140°

Algebra ->  Triangles -> SOLUTION: If the measure of each base angle of an isoscele triangle is20°.why the vertex anglemustbe 140°      Log On


   

Question 501315: If the measure of each base angle of an isoscele triangle is20°.why the vertex anglemustbe 140°
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
total angles of a triangle =180 degrees