Question

Find the measure of the vertex angle of the isosceles triangle if the measure of one base angle is 67.5 degrees.

Answer 1

For this case we know that one base angle is 67.5º

Then the other base angle is 67.5º

Then we can find the vertex angle like this:

180 - 67.5- 67.5= 45º

Then the answer for this case is:

45º