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

LESSON FOURTEENTH.

REVIEW.

Read all the interior angles formed by the lines a b, c d, and e f.

Why is m n d an interior angle?

What is an interior angle?

Read all the exterior angles formed by the same lines.

Why is d n f an exterior angle?

What is an exterior angle?

Read all interior angles formed by the lines g h, k l, and i j.

All the remaining interior angles in the diagram. All the exterior angles.