Lesson Sixteenth Review
Read the exterior opposite angles on the right of the line e f. (Diagram 14.)
On the left. On the right of r s. On the left.
Why are e m a, c n f, exterior angles?
Why are they opposite angles?
What are opposite angles?
Read the interior opposite angles on the right of the intersecting line e f.
On the left of it. On the right of r s. On the left.
Read the interior alternate angles formed by the lines a b, c d, and e f.
Which pair are acute angles?
Which pair are obtuse angles?
Why are b m n, m n c, interior angles? Why alternate? What are alternate angles?
Read the exterior alternate angles of the same lines.
Read the acute interior alternate angles of the parallels t u, v w. The obtuse.
The acute exterior alternate angles. Obtuse.
Read the pair of opposite exterior angles on the right of the line e f. On the left.
On the right of r s. On the left.