Question

Find ACD need it guys

Answer 1

∠ ACD = 140°

Explanation:

Since ∠ DCE and ∠ DEC are congruent , then

∠ DCE =
`(180-100)/(2)` =
`(80)/(2)` = 40°

∠ ACD and ∠ DCE are adjacent and supplementary, that is sum to 180°

∠ ACD = 180° - ∠ DCE = 180° - 40° = 140°