Geometry Review

What is a six sided polygon

called?

Hexagon

What is a polygon with all angles and sides

congruent called?

Regular polygon

What is a quadrilateral with opposite sides parallel

called?

parallelogram

A simple closed figure formed by

three or more sides is called

what?

polygon

What is the most common

unit of measure for an angle?

degree

What do you call an angle whose

measure is between

0° and 90°?

°°

Acute angle

What do you call an angle whose

measure is between 90° and 180°?

Obtuseangle

What is a straight angle?

An angle that measures

exactly 180°

If the sum of two angles

adds to 180°, then they are called what?

Supplementary angles

If the sum of two angles

adds to 90°, then they are called what?

Complementary angles

What is the supplementary

angle of an angle that

measures 43°?

137°

A triangle whose sides and angles are

congruent is called what?

An equilateral triangle

A triangle that has 2 sides congruent is called what?

Isosceles triangle

If a triangle’s three sides are

all different lengths, then it is called what?

Scalenetriangle

What is an eight sided polygon

called?

Octagon

What is a five sided polygon

called?

Pentagon

What is an edge?

The intersection of faces of a 3-

dimensional figure

How many edges does a

hexagonal pyramid have?

12

What are vertices?

The point where the edges of a 3-dimensional figure intersect

How many vertices does a square pyramid

have?

5

What is a face?

The flat surfaces of a three-

dimensional figure

How many faces does a pentagonal

prism have?

7

Sketch the net of a square pyramid.

What polygons make up the net

of a cylinder?

Two circles and one rectangle

Why isn’t a circle a

polygon?

It does not have sides, and it has curved edges.