Polygons and Angles Lines of Symmetry

Billy sorted polygons into groups. The polygons shown below belong in the same group. Which description best represents this group?

• Polygons with parallel and perpendicular lines

• Polygons with perpendicular lines and at least one right angle

• Polygons with acute and obtuse angles

• Polygons with obtuse angles only

A polygon has to have

• at least two sides

• at least three sides

• four or more sides

• no sides

How many sides does an equilateral triangle have?

• 2

• 3

• 4

• 5

Which of these is a polygon?

• cube

• quadrangle

• angle

• circle

How many lines of symmetry does this trapezoid have?

• 0

• 1

• 2

• 3

• is symmetrical

• not symmetrical

Is this a line of symmetry?

• Yes

• No

I am a polygon. I have more than one more vertex than a square has. What am I?

• triangle

• rectangle

• pentagon

• octagon

An octagon has _____ vertices. 

• 1

• 4

• 6

• 8

A hexagon has ___ angles.

• 6

• 4

• 8

• 10