Answer with explanation:
→Triangle DEC equals about Triangle B EC.
⇒The meaning of equal here,is that both the triangles that is, ΔDEC ≅ ΔB EC.
≡When Triangles are congruent,their corresponding sides and angles are equal .
Corresponding Sides which are equal by C P C TC:
1. BE = DE
2.BC =CD
3.EC, is Common.
Corresponding angles which are equal by C P C TC are:
1. ∠B EC=∠DEC
2. ∠ D CE=∠B CE
3.∠ E B C= ∠ E D C
Option A: ⇒Angle E BC equals about angle E DC