Question

Find the value of x. Show your work with proper statements and notations. D ∈ AC

Answer 1

x=25°

Explanation:

Using the "Z rule," m∠DCB has the same value with m∠EAD so they are both x.

Look at D, the other side should be 130° since it'll be 180 when you add 130 and 50.

in our triangle DBC we have 130° and 2x. So 2x = 50 and x=25