Polygons Lesson

A polygon is a shape that is...

• closed and has straight lines

• closed and has curved lines

• open and has curved lines

• open and has straight lines

A heptagon has _____ sides.

All polygons are 2D.

• True

• False

The corner point of a shape is called the ____.

The inside angle of a shape is called a/an ____ angle.

What am I? I have 8 sides which are all equal but my interior angles are not equal.

• Regular octagon

• Irregular hexagon

• Irregular octagon

• Regular hexagon

A regular polygon with 4 sides is called a ____.

One interior angle of a regular 3-sided polygon will measure ____ degrees.

A shape that has an opening is ...

• A polygon

• Not a polygon

A polygon with 3 sides is a ____.