Alternate Interior Angles And Exterior Angles. The angle pairs are on Alternate sides of the Transversal and they are on the Interior of the two crossed lines. To help you remember.
Corresponding Alternate Interior Alternate Exterior Angles and Transversal Lines - YouTube. As you can see the C shape may appear back to front but this doesnt affect the angle measurements. When a Transversal line crosses through 2 parallel straight lines the interior.
Geometry - Identifying Alternate Interior and Exterior Angles - YouTube.
When a transversal intersects two parallel lines the alternate exterior angles formed are always equal. In todays lesson we will prove the alternate interior theorem stating that interior alternating angles and exterior alternating angles between parallel lines are congruent. When two lines are crossed by another line called the Transversal. On parallel lines co-interior or C angles add up to 180.