A plumb bob is a weight hung at the end of a string, called a plumb line. The weight pulls the string down so that the plumb line is perfectly vertical. Suppose that the angle formed by the wall and the roof is 123° and the angle formed by the plumb line and the roof is 123°. How does this show that the wall is perfectly vertical?
Could you guys help me my homework please?
1 answer
remember your geometry, and theorems about angles formed by transversals of parallel lines, and their converses.