G8

Copyright © Swun Math Grade 8 Cumulative Glossary TE

Grade 8 • Glossary

Term Definition Example Unit

supplementary

angles

two angles that add up to 180°;

both are adjacent angles

10

system of

equations

a set of two or more equations

with the same variables

2 x — y = 2

2 x + y = 6

8

tape diagram a visual model representing

parts of a whole; also called a

bar model

4

term (^) a constant, variable, or a number
and variable, multiplied in an
expression and separated by + or
─
52 x^2 — 9 x + 36 = 7 m + 82
4
theorem a rule in math; a statement that
can be proven
9 is a perfect square: 3^2 = 9
Pythagorean Theorem:
a^2 + b^2 = c^2
5
translation a slide; moving every point on a
shape the same distance and in
the same direction
9
transversal two lines crossed by another
line
10
two-way table shows data from one sample
group as it relates to two
different categories
12