Geometry Unit 2: Angle Pairs, Transversals, and Earth's Circumference

Vocabulary flashcards covering angle pairs formed by transversals and Eratosthenes' historical calculation of Earth's circumference based on the lecture notes.

Corresponding Angles

Angles in the same relative position at each intersection where a transversal line intersects two lines. If the lines are parallel, corresponding angles are equal.

Alternate Exterior Angles

Angles located on opposite sides of the transversal line and outside the two parallel lines. If the lines are parallel, alternate exterior angles are equal.

Alternate Interior Angles

Angles located on opposite sides of the transversal line and inside the two parallel lines. If the lines are parallel, alternate interior angles are equal.

Consecutive Interior Angles

Angles located on the same side of the transversal line and inside the two parallel lines. If the lines are parallel, consecutive interior angles are supplementary, summing to $180^\text{o}$.