Answer :
Answer:
9
Step-by-step explanation:
that's because angle B is twice angle A in which they add up to 180 because they are supplementary angles
20x=180
divide both sides by 20
in which
x=9
Answer:
9
Step-by-step explanation:
that's because angle B is twice angle A in which they add up to 180 because they are supplementary angles
20x=180
divide both sides by 20
in which
x=9