Question

I need this question answered now please with a mini explanation thanks​

Answer 1

100°

Explanation:

The sum of the 3 angles in a triangle = 180°, thus

∠ACB = 180° - (90 + 50)° = 180° - 140° = 40°

∠ECD = 40° ( vertical angle to ∠ACB )

Since CE ≅ ED then ΔCDE is isosceles and

∠CDE = ∠ECD = 40°

∠E = 180° - (40 + 40)° = 180° - 80° = 100°