Geometry exam 1

Parallelogram listing

• Quadrilateral

• Opposite sides are parallel

• Both pairs of opposites sides are congruent

• Both pairs of opposite angles are congruent

• Diagonals bisect each other

Rhombus listing

• Parallelogram

• All four sides are congruent

• Diagonals are perpendicular

• Diagonals bisect the angles

• Both diagonals bisect the rhombus

Kite listing

• Quadrilateral

• 2 pairs of adjacent congruent angles

• Diagonals are perpendicular

• Diagonals bisect one pair of opposite angles

• 2 pairs of opposite angles are congruent

• 1 diagonal bisects

Trapezoid definition

Quadrilateral with exactly one pair of parallel sides

Quadrilateral definition

A 4 sided shape

Parallelogram definition

a quadrilateral (four-sided shape) where both pairs of opposite sides are parallel and equal in length

Parallel definition

two or more lines that never intersect

Sum of a Triangle

• 3 sides

• 1 triangle

• Angle sum 180

• Each Angle 60

Sum of Quadrilateral

• 4 sides

• 2 triangles

• Angle sum 360

• Each angle 90

Sum of a pentagon

• 5 sides

• 3 triangles

• Sum 540

• Each angle 108

Sum of hexagon

• 6 sides

• 4 triangles

• Sum 720

• Each angle is 120

Sum of Heptagon

• 7 sides

• 5 triangles

• Sum 900

• Each angle is 128.57

Sum of Octagon

• 8 sides

• 6 triangles

• Sum 1,080

• Each angel 135

Alternate interior angle

Corresponding angels

Vertical angles

isosceles

Triangles that have at least 2 congruent sides