Question

Ans:

30.
In the figure, ACDE is a parallelogram. ZEAB = 125°, ZCBD = 78° and
ZEFD = 76º. Find ZECD.
​

Answer 1

81°

Explanation:

let,

ZECD be x°

125°+78°+76°+x°= 360°{ the sum of angle of parallelogram is 360°}

or, 279°+x°= 360°

or, x°= 360°- 279°

or, x° = 81°