Copyright © Swun Math Grade 8 Cumulative Glossary TE
Term Definition Example Unit
cone a three-dimensional figure
with a circular base connected
to a point with a curved side
11
congruent
figures
figures with exactly the same
shape and same size
∆ ABC ≅ ∆PQR
9
constant a number on its own in an
expression or equation
2 a + 5; 5 is the constant
4
converse of the
Pythagorean
Theorem
if a^2 + b^2 = c^2 , then the triangle
is a right triangle
If a^2 + b^2 < c^2 , then the triangle is obtuse.
If a^2 + b^2 > c^2 , then the triangle is acute.
5
coordinates a pair of numbers used to
locate a point on a coordinate
plane: written in order of x
(horizontal value), y (vertical
value); also called an ordered
pair
(x, y) 6
corresponding
angles
matching angles in similar
figures; are congruent
In transversals, corresponding
angles are in matching corners
9, 10
corresponding
sides
matching sides in similar
figures; are proportional
AC ≅ PR
9, 10