Answer:
5
Step-by-step explanation:
Steps:
1. 4 + 1 make five
2. 5 is divisible by five!!
An isosceles triangle is a triangle with two equal sides. Since, one of the angles is 90 degrees. Then, the 2 remaining must equal 90 because the total of the triangle should be 180 degrees. So, I think 45 degrees is the only one we can use here because 45 + 45 = 90 degrees.