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

Diagram 38.

TEST LESSON.

By means of Fig. A,—

1. Prove that the opposite exterior and interior angles Green, Blue, are equal to each other.

2. Prove that the opposite exterior and interior angles Red, Yellow, are equal to each other.

3. Prove the opposite exterior and interior angles c n e, a m n, equal.

4. Prove the opposite exterior and interior angles e n d, n m b, equal.

By means of Fig. B,—

5. Prove the opposite exterior and interior angles e m a, m n d, equal.