+1982 Is this statement true or false?
If two lines are perpendicular, then they form a right angle.
A. true
B. false
In the diagram below, lines a and b are parallel and cut by a transversal, t. If angle 1 is 100 degrees, find the measure of angle 4.
A. 80
B. 50
C. 100
D. 90
+36916 True....THAT is the definition of perpindicular
Angle 1 and agle 4 form a straight line ....they add to 180 degrees...so you should be able to calculate angle 4
+36916 Are you just guesssing or what?
Angle 1 + angle 4 = 180
100 + angle 4 = 180
