U5BD7 Polygon Review
Name
Triangle
Picture
Definition
A three sided polygon.
Characteristics
All angles add to 180°
Scalene Triangle
A triangle with no
congruent sides.
All angles add to 180°
Isosceles Triangle
A triangle with at least
two congruent sides.
All angles add to 180°
Equilateral
Triangle
A triangle with three
congruent sides.
All angles add to 180°
All angles are congruent.
All sides are congruent.
Right Triangle
A triangle with one right
angle.
All angles add to 180°
One angle is 90°
2legs (a,b), 1 hypotenuse (c)
**Pythagorean theorem
Quadrilateral
A four sided polygon.
4 sides
The interior angles add up to
360°.
Example
U5BD7 Polygon Review
Parallelogram
A quadrilateral with two
pairs of congruent sides.
Opposite sides parallel
Opposite sides congruent
Opposite angles congruent
Consecutive angles supplementary
Diagonals bisect each other
Rectangle
A quadrilateral with
four right angles.
All characteristics of a parallelogram.
Diagonals are congruent
All angles are right angles
Rhombus
A quadrilateral with
four congruent sides.
All characteristics of a parallelogram.
Diagonals are perpendicular
Diagonals bisect a pair of opposite angles
Square
A quadrilateral with
four congruent sides
and four congruent
angles.
All characteristics of a parallelogram.
Diagonals are congruent
Diagonals are perpendicular
Diagonals bisect pair of opposite angles
All angles are right angles
Trapezoid
A quadrilateral with
exactly one pair of
parallel sides.
One pair of parallel sides.
Kite
A quadrilateral with
exactly two pairs of
congruent consecutive
sides.
The diagonals are perpendicular
The longer diagonal bisects the shorter
diagonal.
Two pairs of congruent adjacent sides
One set of congruent angles (located
between the non- congruent consecutive
sides.)