the sum of the lengths of the sides of a polygon
What is perimeter?
A polygon that has only one pair of parallel lines
What is a trapezoid?
An angle that measures between 91 and 180 degrees
What is an obtuse angle?
a straight path that goes on and on in both directions
What is a line
two lines that cross at a point and make an "X"
What are intersecting lines?
the number of square units that cover a polygon
What is area?
This polygon has all equal sides and 4 right angles
What is a square ?
An angle that measures 90 degrees
What is a right angle?
l x w
What is the formula for finding area?
This shape has an infinite amount of lines of symmetry
What is a circle?
the lines that cut a polygon in half leaving two matching pieces
What are lines of symmetry?
has one pair of parallel lines and up to 2 right angles
What is a right trapezoid?
4S
What is the area formula for a square?
a closed figure with at least 3 sides that are straight
What is a polygon?
2 pairs of parallel sides, all sides are equal and no right angles
What is a rhombus?
one hundred eighty degrees
What is a straight angle? (straight line)