Question

Answer this question immediately.

84b42f2e9374d65011dc0bd9257725ba.pdf

Answer 1

Answer:

seee bro the photois not there pdf no. need

Answer 2

Answer:

57 degrees

Explanation:

this is because 123degrees + its beside angle which is alternately opposite to angle ECD = 180degrees (linear pair)

so angle ECD  = 180-123=57 degrees