# Geometry

### 39 terms by kkcrowley

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### rhombus

A parallelogram with all sides the same length

### rectangle

a parallelogram with four right angles

### isosceles triangle

a triangle with two equal sides

### face

A flat surface of a polyhedron

### solid figure

a three-dimensional shape

### edge

A line segment where two faces meet in a solid figure

### parallelogram

A quadrilateral with two pairs of parallel sides

### trapezoid

a quadrilateral with exactly one pair of parallel sides

### square

A rectangle with all sides the same length.

### volume

amount of space an object takes up

### vertex

The common endpoint of an angle

### cube

a three-dimensional shape with six square or rectangular sides

### hexagon

a six-sided polygon

### obtuse triangle

a triangle with one obtuse angle

### right triangle

a triangle with one right angle

### scalene triangle

a triangle with no two sides of equal length

### equilateral triangle

a triangle with three equal sides

### octagon

a polygon with eight sides

A polygon with 4 sides

### triangle

a three-sided polygon

### pentagon

a polygon with 5 sides

### regular polygon

a polygon with all sides and all angles equal

### polygon

A closed plane figure made up of line segments

### degrees

a unit for measuring angles

### protractor

an instrument for drawing/measuring angles

### straight angle

an angle that measures 180 degrees

### obtuse angle

An angle more than 90 degrees

### right angle

an angle that measures 90 degrees

### angle

two rays with a common endpoint

### acute angle

An angle less than 90 degrees

### plane

An endless flat surface

### line segment

part of a line with two endpoints

### point

An exact location in space

### intersecting lines

lines that cross at one point

### ray

Part of a line that has one endpoint and extends forever in one direction.

### line

A straight path of points that goes on forever in two directions

### perpendicular lines

Two lines that intersect to form right angles

### parallel lines

Lines in the same plane that do not intersect

### acute triangle

a triangle with 3 acute angles

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