3rd Grade Geometry Vocabulary

What is a polygon with five sides called?

• A) Hexagon

• B) Pentagon

• C) Octagon

What is a polygon with six sides called?

• A) Hexagon

• B) Pentagon

• C) Octagon

What is a rectangle?

• A) A special parallelogram with four right angles.

• B) A special parallelogram in which all sides are the same length.

• C) A special parallelogram with four right angles and all sides the same length.

What is a rhombus?

• A) A special parallelogram with four right angles.

• B) A special parallelogram in which all sides are the same length.

• C) A special parallelogram with four right angles and all sides the same length.

What is a square?

• A) A special parallelogram with four right angles.

• B) A special parallelogram in which all sides are the same length.

• C) A special parallelogram with four right angles and all sides the same length.

What is a trapezoid?

• A quadrilateral with two pairs of parallel sides

• A quadrilateral with exactly one pair of parallel sides

• A polygon with four sides.

What is a parallelogram?

• A quadrilateral with exactly one pair of parallel sides

• A quadrilateral with two pairs of parallel sides

• A polygon with four sides.

What is an angle?

• A) Two rays with the same endpoint; that endpoint is the vertex of the angle.

• B) A line with no endpoints.

• C) A shape with four sides.

What is the vertex of an angle?

• The endpoint of two rays that form an angle.

• The midpoint of a line segment.

• The center of a circle.

What is a right angle?

• An angle that makes a square corner and measures 90 degrees.

• An angle that is less than 90 degrees.

• An angle that is more than 180 degrees.