**Important Chapter Vocabulary**1.

**Acute Triangle;**A triangle with three acute angles. (less than 90 degrees)

2.

**Line Segment;**A part of a line that includes two points, called endpoints, and the points between them.

3.

**Obtuse Triangle;**A triangle with one obtuse angle. (larger than 90 degrees)

4.

**Ray;**A part of a line, with one endpoint, that is straight and continues in one direction.

5.

**Right Triangle;**A triangle with one right angle (90 degrees) and two acute angles.