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Identify and draw points, lines, line segments, rays, and angles.
Learn step-by-step with practice exercises built right in.
| Figure | Description | Symbol |
|---|---|---|
| Point | An exact location in space | Point |
| Line | Extends forever in both directions |
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| Line segment | Part of a line with two endpoints |
| Ray | Part of a line with one endpoint, extends forever in one direction |
An angle is formed by two rays sharing a common endpoint (called the vertex).
| Type | Measure | Description |
|---|---|---|
| Right angle | Exactly | Looks like a corner of a square |
| Acute angle | Less than | "Small" angle |
| Obtuse angle | Between and | "Wide" angle |
| Straight angle | Exactly | Looks like a straight line |
A shape has a line of symmetry if it can be folded in half and both sides match perfectly.
Practice: Find all the right angles in your classroom!