What do we call a plane figure with four sides?
quadrilateral
What is the sum of the interior angles of a quadrilateral?
360 degrees
What do you call the line drawn from one corner to another corner?
diagonal
At least how many sides does a polygon have?
three
It refers to the distance around a plane figure. It is the sum of all lengths.
perimeter
What is the sum of the three angles of a triangle?
180 degrees
Which type of triangle has three sides of different lengths?
scalene
In triangle ABC, what is the base?
line segment BC
In triangle ABC, what is the peak angle?
angle A
What do you call line segment AD?
height
Name this quadrilateral.
parallelogram
Name this quadrilateral
irregular quadrilateral
