Answer:
18 = Perimeter
Step-by-step explanation:
To find the perimeter, we add up all 3 sides. We know 2 of the sides are the same and are length x.
x+x+8 = Perimeter
2x + 8 = Perimeter
x is given as 5
2(5) + 8 = Perimeter
10+8 = Perimeter
15x + 9 (We combing like terms. Ex. 16x and -x)
∠ SPQ = 75°
The sum of the 4 angles in a quadrilateral = 360°
Subtract the sum of the 3 angles from 360 for ∠ SPQ
∠ SPQ = 360° - (90 + 74 + 121)° = 360° - 285° = 75°
