ABC Math Guide for Angles, Shapes, Fractions & More

A is for Angle
An angle is formed by two rays with a
common end point.

B is for Base
A base is any side of a polygon

C is for Compatible Numbers
Numbers that are easy to compute with
mentally. Example 9+4+16. Add 16+4=20,
then add 9, 20+9=29.

D is for Diameter
The distance across a circle through its center.

FINISH
E is for Expanded Form
The way to write a number that shows the
pace value of each digit.

F is for Factors
Numbers that are multiplied to get a product.

G is for Greatest Common Factor
(GCF)
The greatest factor of two or more numbers.

H is for Horizontal
Straight across from side to side.

I is for Integer
 A positive or negative number including
zero.

K is for Kite
 A quadrilateral with two pairs of adjacent
sides that are congruent.

L is Lateral Surface
 The area of all the sides of an object
excluding area of its base and top.

M is for Mode
 Data value that occurs most often in a
data set.

N is for Numerator
 The dividend (top number) of a fraction.

O is for Obtuse Angle
 An angle that measures more than 90
degrees and less than 180 degrees.

P is for Probability
 A number that describes the chance.

Q is for Quadrilateral
 A plane with four sides and four angles.

R is for Ray
 One end point and extends without
ending one direction only.

S is for Straight Angle
 An angle that measures 180 degrees.

T is for Tree Diagram
 A diagram used to organize outcomes of a
experiment.

U is for Unit Rate
 Describes how many units of the first
type of quantity corresponds to one
unit of the second type of quantity.

V is for Vertex
 A vertex is a common end point.

W is for Whole Numbers
 Whole numbers include all positive
integers and zero.

X is for X-axis
 The horizontal line of a graph.

Y is for Y-axis
 Vertical line on a graph

Z is for Zero Slope
 The slope of a horizontal line. A
horizontal line has a slope of 0 because
all its points have the same x-
coordinate.

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