| Term | Definition |
|
Isosceles |
A triangle with two sides or angles that are equal. |
|
Equilateral |
A triangle with three equal sides and angles. |
|
Scalene |
A triangle with no sides or angles that are equal. |
|
Obtuse |
A triangle with one obtuse angle. |
|
Actue |
A triangle with three acute angles. |
|
Right |
A triangle with one right angle. |
|
Square |
A figure with four equal sides and four right angles; opposite sides are equal and parallel. |
|
Rectangle |
A figure with four sides and four right angles; opposite sides are equal and parallel |
|
Parellelogram |
A figure with two pairs of parallel sides; opposite sides are equal and parallel. |
|
Rhombus |
A figure with four equal sides; opposite sides are parallel. |
|
Trapezoid |
A figure with one pair of parallel sides. |