SOLUTION: An obtuse isosceles triangle has one angle with a measure of 2x and another angle with a measure of 5x. What is the measure of the third angle of the triangle?

Algebra ->  Triangles -> SOLUTION: An obtuse isosceles triangle has one angle with a measure of 2x and another angle with a measure of 5x. What is the measure of the third angle of the triangle?      Log On


   



Question 934412: An obtuse isosceles triangle has one angle with a measure of 2x and another angle with a measure of 5x. What is the measure of the third angle of the triangle?
Answer by vicgonzerx(31) About Me  (Show Source):
You can put this solution on YOUR website!
isosceles triangle ----has 2 equal sides and 2 angle are equal
given angle are 2x and 5x
we can say that the obttuse angle is 5x
so the third angle is 2x also
2x+5x+2x=180
x=20
2x=40
5x=100
note the total angle of a triangle is 180 degree