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Corresponding Angles Theorem

In the applet below, a TRANSVERSAL intersects 2 PARALLEL LINES. When this happens, there are 4 pairs of corresponding angles that are formed. Interact with the applet below for a few minutes, then answer the questions that immediately follow.
Directions & Questions: 1) Complete the following statement: If a transversal intersects 2 ________________ ______________, then corresponding angles are _____________________. 2) If the pink angle above measures 52 degrees, what would the measure of its corresponding angle be?  What would the measure of the gray angle be?