Question

In the figure ,AB||DE ∆B=100°∆D=140°, Find ∆BCD.∆BCD= ?​

Answer 1

Answer: <BCD = =60 degrees

Step-by-step explanation:

First of all your question details are wrong in this figure AB at any cost cannot become parallel to DE.

now in triangle BCD

<B= 180-100 = 80 ( straight line forms a 180 angle )

similarly <D=180-140 = 40 (same Concept)

Using angle sum property in triangle BCD

we get

<D+<B+C=180

<C + 40 + 80 = 180

<C=60 or <BCD = 60

Answer 2

Step-by-step explanation:

use the properties of parallel lines and straight angle