# Geometry Terms

## 25 terms

### point

An exact location in space

### transformation

The turning, sliding, or flipping of a plane figure

### rotation

An image formed by rotating an image around a point

### chord

A line segment with both endpoints on the circle but not necessarily through the middle

### ray

A part of a line that has one endpoint and goes on and on in one direction

### triangle

A polygon with three sides

### pentagon

A polygon with five sides

### degree

A unit for measuring angles

### octagon

An eight-sided polygon

### equilateral triangle

A triangle with all sides and angles equal

### acute angle

An angle with a measure of less than ninety degrees

### obtuse triangle

A triangle with one angle greater than ninety degrees

### polygon

A closed plane figure with line segments as sides

### face

A flat surface of a space figure

### slide

Another word for translation

### protractor

An instrument used to measure or draw angles

### cube

A space figure with six congruent square faces

### congruent

Same size, same shape

### angle

Two rays with a common endpoint called the vertex

### circumference

The distance around a circle

### isosceles triangle

A triangle with two congruent sides

### similar

Figures that have the same shape but not necessarily the same size

### cone

A space figure with one circular base and one vertex

### scalene triangle

A triangle with no congruent sides

### rhombus

A quadrilateral with each pair of opposite sides parallel and congruent