Can you help work question number 4 please?

Step-by-step explanation:
if 2 sides are equal which means it is an Isosceles triangle
so,
→ 52 + 52 + c = 180
→ 104 + c = 180
→ c = 180 - 104
→ c = 76°
d = 52°
hope this answer helps you dear! take care and may u have a great day!