A closed plane figure whose sides are straight line segments that are connected endpoint to endpoint.
The point where two rays meet in an angle.
A triangle with at least two congruent sides.
A triangle with no congruent sides.
A triangle that has one right angle.
An angle that is less than 90% angle.
An angle that is greater than 90% angle.
A shape with 2 pairs of opposite sides that are parallel and 2 pairs of opposite sides that are congruent.
A shape with exactly one pair of parallel sides.
A shape with 2 pairs of congruent sides and 4 right angles.
A shape with 4 congruent sides and 2 pairs of congruent angles.
A shape with 4 congruent sides and 4 right angles.
A polygon with 4 sides and 4 angles.
A diagonal of a polygon is a line segment that connects two of the vertices of the polygon. It is not a side of the figure.
Figures that have the same shape and size.
A triangle with all sides congruent.