# Basic Geometry Terms, Part 1

## 22 terms

### Hypotenuse

longest side in a right triangle; opposite the right angle

8-sided polygon

### Scalene Triangle

triangle with no sides equal in length

6-sided polygon

### Line Segment

part of a line with two endpoints

### Vertex

point where two rays meet

### Perpendicular Lines

lines that intersect to form four right angles

10-sided polygon

4-sided polygon

### Equilateral Triangle

triangle with all sides equal in length

### Diagonal

connects two non-consecutive vertices

### Line

a collection of points extending forever in opposite directions

3-sided polygon

### Point

an exact location in space

### Ray

contains an endpoint and extends forever in the opposite direction

### Parallel Lines

two lines that never intersect and are always the same distance apart

9-sided polygon

5-sided polygon

### Polygon

a closed figure whose sides are line segments

### Right Triangle

a triangle that contains a right angle

### Isosceles Triangle

a triangle with two sides equal in length

### Legs

the two sides of a right triangle that meet to form the right angle