The figure below shows a transversal t which intersects the

The figure below shows a transversal t which intersects the parallel lines PQ and RS: Write a paragraph to prove that the measure of angle 3 is equal to the measure of angle 5.

Solution

the reason that angle 5 is equal to angle 3 is that they are alternate angles. When a transversal line cuts two parallel line the alternate interior angles will be equal,so in our figure we have the same case that is why 5=3