Answer:
34
Step-by-step explanation:
*A triangle has an interior angle of 180 degrees
We know that one of the angle is 112 degree
180 - 112 = 68 degrees
We also know that the triangle is an isosceles triangle which means both sides and both angles are the same ( we can determine that it's an isosceles because of the two lines)
68 / 2 = 34
R = 34 degrees
T = 34 degrees
S = 112 degrees
