Straight line from center of circle going to the edge of the circle
Radius
The name for the answer to an addition problem
Sum
The part of the fraction that represents the "part" of the fraction
Numerator
5 + 16 =
21
A triangle with 3 acute angles
Equilateral triangle
Straight line passing through a circle from side to side and passing through the middle
Diameter
The answer to a subtraction problem
Difference
The part of the fraction that represents the "whole" of the fraction
Denominator
28 - 40 =
- 12
Triangle with one 90o angle
Right triangle
Distance around a circle
Circumference
The answer to a multiplication problem
Product
A fraction that has a larger numerator than its denominator
Improper fraction
6 times 12 =
72
Isosceles triangle
A straight line segment whose endpoints both lie on the circle (not through the middle of the circle)
Chord
Quotient
1 and 3/5
48 / 8 =
6
Formulas for area and perimeter for a rectangle
Area = Length times Width
Perimeter = 2 times Length + 2 times Width
A circle's circumference divided by its diameter
Pi or 3.14
2 and 4/5 as an improper fraction
14/5
(-13) + (-26) =
- 39
Total number of degrees of all the angles in a triangle
180o