Question

for ∆ABC,find the measure of angleACD​

Answer 1

Answer:

Step-by-step explanation:

66+45+angle ACB=180

ACB=180-111

ACB=69

ACB+ACD=180

ACD=180 - 69

ACD=111

Answer 2

Step-by-step explanation:

First find the angle ACB

that is Angle ABC+angle BAC+angle ACB=180°

so angle ACB= 180-(45+66)

=180-111

=69

now we know that adjacent angles are supplementary so Angle ACB+ angle ACD=180°

so angle ACD =180-69

which is equal to 111°

hope u understand the answer.