Answer:
Step-by-step explanation:
11. ..................................................
The triangle is isosceles
Equal sides have length of
- 5x - 11 = 3x - 3
- 5x - 2x = 11 - 3
- 3x = 9
- x = 3
13. ..................................................
The triangle is isosceles
x is one of the angles of a right triangle
The other angle of this triangle is same as corresponding angle = 63°