Question

If AB and DE are parallel to each other, find the measure of BCD


How can the answer be 21 degrees??​

Answer 1

Answer:

21 degree is the answer because:-

if we construct a line xy such that x-c-y;

since lines are parallel

Angle ABC+Angle BCX=180-(interior angles)

101+angle BCX=180

Angle BCX=180-101

Angle BCX=79°

therefore angle BCD will be 21° by applying alternate angle test...

hope it help you!