Answer:
x = 45°
Step-by-step explanation:
This is an isosceles triangle. There is a 90° angle. The other two angles (x) have to be the same as they are both called x.
The sum of all the angles in a triangle is 180°. You already have a 90° angle.
180° - 90° = 90°.
90° ÷ 2 = 45°
(You divide it by 2 because there are 2 x's)
Another way:
You know this is an isosceles triangle, so the angles have to be 45°-45°-90°.
