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.
|Isosceles Triangle|| |
A triangle with at least two congruent sides.
|Scalene Triangle|| |
A triangle with no congruent sides.
|Right Angle|| |
A triangle that has one right angle.
|Acute Angle|| |
An angle that is less than 90% angle.
|Obtuse 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.
|Congruent Figures|| |
Figures that have the same shape and size.
|Equilateral Triangle|| |
A triangle with all sides congruent.
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