3rd Grade: Geometry Vocabulary Week 1

Front

What is an angle smaller than a right angle?

Back

Acute angle

Front

What is an angle larger than a right angle?

Back

Obtuse angle

Front

What do you call a quadrilateral with exactly one pair of opposite sides that are parallel?

Back

Trapezoid

Front

A square can also be a...?

Back

Rectangle

Front

What is part of a line that has one endpoint and continues forever in one direction?

Back

Ray

Front

What do you call an angle that is exactly 90 degrees?

Back

Right angle

Front

What is a polygon with four sides?

Back

Quadrilateral

Front

What do you call a triangle with one angle greater than 90 degrees?

Back

Obtuse triangle

Front

What is a closed figure made up of three or more line segments?

Back

Polygon

Front

What do you call a line that intersects another line at a right angle?

Back

Perpendicular line