Answer:
Step-by-step explanation:
ΔABD ≅ ΔAEC because:
- AD = AC = 17
- ∠A is common and congruent to itself
We have two sides and the included angle congruent - SAS
Corresponding parts of congruent figures are congruent:
Now, ∠CED is exterior angle and exterior angle is same as sum of non-adjacent interior angles:
- m∠CED = m∠A + m∠C
- 79° = 42° + p°
- p = 79° - 42°
- p = 37°
