LESSON TWENTY-SECOND.
REVIEW.
Name four acute-angled triangles. (Diagram [17].)
Why is the triangle 8 acute-angled?
What is an acute-angled triangle?
Name three obtuse-angled triangles.
Why is the triangle 9 an obtuse-angled triangle?
What is an obtuse-angled triangle?
Name four right-angled triangles.
Why is the triangle 6 a right-angled triangle?
What is a right-angled triangle?
In the triangle 6, which side is the hypothenuse?
Why?
What is the hypothenuse?
What two sides of the triangle 6 may be regarded as the base?
If q r be considered the base, what do you call the side q s?
Read the hypothenuse of each of the triangles 3, 5, 6, and 11.
Diagram 18.
