Alternate Interior Angles - Concept

Concept Concept (1)

Alternate interior angles are formed by a transversal intersecting two parallel lines . They are located between the two parallel lines but on opposite sides of the transversal, creating two pairs (four total angles) of alternate interior angles. Alternate interior angles are congruent, meaning they have equal measure.

Sample Sample Problems (2)

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Alternate Interior Angles - Problem 1
Problem 1
How to find a missing interior angle if the alternate is given.
Alternate Interior Angles - Problem 2
Problem 2
How to find missing angles created by two parallel lines and two transversals.