Answer:
m∠BDC = 135
m∠ACD = 45
Step-by-step explanation:
m∠BDC and m∠ACD are co - interior angles.
Sum of co - interior angles is 180,
m∠BDC + m∠ACD = 180
11x + 25 + 4x + 5 = 180
11x + 4x + 25 + 5 = 180
15x + 30 = 180
15x = 180 - 30
15x = 150
x = 150 / 15
x = 10
m∠BDC = 11x + 25
= 11 ( 10 ) + 25
= 110 + 25
m∠BDC = 135
m∠ACD = 4x + 5
= 4 ( 10 ) + 5
= 40 + 5
m∠ACD = 40
