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Corresponding Angles are two congruent angles, both lying on the same side of the transversal and situated the same way on two different parallel lines.
is a segment joining the midpoints of two sides of a triangle.
A perpendicular line that passes through one side of a triangle at the midpoint
Alternate Interior Angles are created where a transversal crosses two parallel lines. Each pair of these angles are inside the parallel lines, and on opposite sides of the transversal.
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Do 2.6 2-9
DO 2.6 #1
Find the four pairs of corresponding angles.
A transversal passes over parallel lines
The markings for parallel lines look a bit like arrows. There must be the same number on a set of parallel lines.
Alternate Exterior Angles are created where a transversal crosses two parallel lines. Each pair of these angles are outside the parallel lines, and on opposite sides of the transversal.
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Is the perpendicular segment from a vertex to its opposite side
Is a line segment joining a vertex to the midpoint