On the right of r s. On the left.
Diagram 15.
LESSON SEVENTEENTH.
REVIEW.
Read thirteen or more angles whose vertices are at c. (Diagram [15].)
Read four obtuse angles.
Read two right angles.
What three acute angles equal one right angle?
On the right of r s. On the left.
Diagram 15.
Read thirteen or more angles whose vertices are at c. (Diagram [15].)
Read four obtuse angles.
Read two right angles.
What three acute angles equal one right angle?