Remember that straight lines are 180°. For #1 angle 1 would be 40°, since 140°+40°=180°
Answer:
B) x = +/- 17
Step-by-step explanation:
Answer:
Step-by-step explanation:
x+15+x+115+90=380 degree(sum of interior angles of four angles is 360 degree)
2x+220=360
2x=360-220
x=140/2
x=70 degree
Any multiple of 4 would work.
Answer:
( 4, 1 )
Step-by-step explanation:
midpoint formula: (x1 + x2/ 2, y1 + y2/ 2)
(9-1/ 2, -6+8/ 2) -> (4,1)