Same angle, different vertex and arm lengths
Angle 1 has vertex P, with one arm pointing east and the other pointing straight up. Angle 2 has vertex Q, somewhere else on the page, with one arm pointing east and the other pointing straight up, but both arms drawn twice as long as angle 1’s arms. Is angle 1 equal to angle 2?
Correct.This lesson is now marked done.
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Not quite.Try again, or ask for a hint.
An angle is a turn between two directions. Ask only whether the turn from one direction to the other is the same amount in both drawings, since nothing else about the drawing counts.
Getting it wrong does not hold you back.Move on to the next lesson: The postulates, stated plainly, including the parallel postulate →