a quadrilateral with exactly one pair of parallel sides
triangle with two equal sides
a polygon with eight sides
a closed plane figure with straight sides
the point inside a circle that is the same distance from each point on the circle
the distance across a circle through its center
a tool used to make circles
a triangle with three equal sides and three equal angles
a polygon with six sides
a polygon with five sides
a polygon with three sides
a parallelogram with four equal sides
a quadrilateral with two pairs of parallel sides
a triangle with no equal sides
a polygon with four sides and four angles
a line segment with one endpoint at the center of a circle and the otehr endpoint on the circle
a closed plain figure made up of all the points the same distance from the center
a triangle with one obtuse angle
a triangle with three acute angles
a triangle with one right angle
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