Geometry Basics
Polygon Parts
Shape Up!
Circles and Angles
Measure Up
100
The amount of space enclosed by the perimeter of a figure.
What is AREA
100
A straight line segment that forms part of the boundary or perimeter of a polygon.
What is Side
100
A parallelogram with four congruent sides AND angles.
What is Square
100
This line segment connects the very center of a circle directly to its edge.
What is Radius
100
How long a figure is from one end to the other.
What is Length
200
The distance around a figure (or the sum of the lengths of the sides).
What is Perimeter
200
The side a parallelogram sits on.
What is Base
200
A parallelogram with four right angles.
What is Rectangle
200
An angle whose vertex is the center of the figure.
What is Central Angle
200
How wide a figure is from one side to the other.
What is Width
300
A quadrilateral with two pairs of sides parallel.
What is Parallelogram
300
A segment that connects non-consecutive vertices.
What is Diagonal
300
A three sided figure with a base and a height.
What is Triangle
300
The ratio of the side opposite an angle to the side adjacent to the same angle.
What is Tangent
300
The distance from base to base (or base to vertex)
What is Height
400
A quadrilateral with one pair of parallel sides.
What is Trapezoid
400
A segment from a polygon’s center perpendicular to the midpoint of a side.
What is Apothem
400
A parallelogram with four congruent sides.
What is Rhombus
400
A polygon with all congruent sides and angles.
What is Regular Polygon
400
The ratio of a figures circumference to its diameter.
What is Pi
500
What's the formula for the area of a parallelogram?
What is Area = Base x Height
500
What's the formula for finding the number of diagonals, d, in a polygon with n sides?
What is d=(n(n-3))/2
500
What is the formula for the area of a trapezoid?
What is Area = (h(b_1 +b₂ ))/2
500
What's the formula for the circumference of a circle in terms of radius?
What is C = 2pir 
500
What is the formula for the area of a regular polygon with perimeter P and apothem a ?
What is Area = 1/2 (P*a)
