Answer:
∠x = 63°
Step-by-step explanation:
The exterior angle added with the measure of ∠BAC will equal 180, since they will form a straight line, so we can calculate the measure of ∠BAC:
128 + x = 180
x = 52
∠BAC = 52°
The angles in a triangle all add up to 180°, so we can set up another equation to find x:
52 + 65 + x = 180
117 + x = 180
it is b
took the test
Then the length of the arc is
Answer:9
B a = 180 -77-60
The angles add to 180 degrees since they form a straight line
77+ 60+a = 180
a = 180 -77-60
