Marks' first lessons in geometry / In two parts. Objectively presented, and designed for the use of primary classes in grammar schools, academies, etc.

by Bernhard Marks

Then a right angle is an angle of how many degrees?

If an angle stand upon less than 90°, what kind of an angle is it?

If an angle stand upon more than 90°, what kind of an angle is it?

Can an angle have as many degrees as a hundred and eighty?

LESSON THIRTY-FIFTH.

REVIEW.

Read nine arcs whose ends are marked. (Diagram [26].)

Read three arcs each of which is one-fourth of a circumference.

Read two arcs each of which is one-half of a circumference.