Parallelogram
A quadrilateral with both pairs of opposite parallel sides
- diagonals bisect each other
-both pairs of opposite angles are congruent
Rectangle
A quadrilateral with four right angles
-parallelogram with congruent diagonals
Rhombus
A quadrilateral with all four sides congruent
-both diagonals bisect their respective interior angles
Trapezoid
A quadrilateral with at least one pair of parallel sides
-two pairs of supplementary angles
Isosceles Trapezoid
A trapezoid with congruent base angles
-trapezoid with congruent diagonals, line of symmetry
Square
A quadrilateral with all four sides congruent and four right angles
-diagonals are congruent, perpendicular, bisect each other
Kite
A quadrilateral with two pairs of congruent adjacent sides
-one diagonal perpendicularly bisects the other, bisects the pair of opposite angles
Quadrilateral
A polygon with four sides
Right Triangle
Has a 90 degree angle
Acute Triangle
All angles less than 90 degrees
Obtuse Triangle
Has an angle more than 90 degrees
Scalene Triangle
No congruent sides
Isosceles Triangle
At least two congruent sides
-at least two congruent angles
Equilateral Triangle
All sides congruent
