Question

16. In the adjoining figure AB || DE, find the measure of /BCD.​

Answer 1

Answer:

First draw a line PCQ passing through C which is parallel to AB and DE.

now, angle ABC = angle BCQ = 115 (alternate interior angle )

again, angle CDE + angle DCQ = 180

so, angle CDE = 180 - 110 =70

we have, angle BCQ =115

now angle BCD + angle DCQ = 115

so angle BCD = 115 - 70 = 45