Geometry Vocabulary Crossword

A ______ is a polygon with 3 sides.
A _____ is a straight path that has no thickness and extends forever in opposite directions.
What has 360 degrees and no sides to it?
What do you call half of a circle?
A quadrilateral has this many sides.
The formula for the area of this polygon is A = length x width. It also has 4 right angles.
A quadrilateral that has 4 right angles and 4 equal sides is call a _____.
If you wanted to plot a point such as (4, 3) you would plot it on a ______.
What do you call a polygon with 6 sides?
What do you call a polygon with 8 sides?
What instrument to you use to draw circles?
What instrument do you use to measure angles?
What do you call a 5 sided figure?
How many sides are in a decagon?