Answer:
x = 45
Step-by-step explanation:
What we know:
- This triangle is an isosceles triangle, so two of the angles are equal to x.
- The two bottom are equal to x.
- The top angle is ninety degrees
- All triangles are 180 degrees
Our equation: 180 = 90 + 2x
- subtract 90 from both sides: 90 = 2x
- divide both sides by 2: 45 = x
- x is 45 degrees
