Scaled Copies

Rational Numbers

Any number that can be written as a fraction

Irrational Numbers

A decimal that never ends and never repeats

Scale Drawing

A drawing that uses a scale to make an object smaller than or larger than the real object.

Scaled Copy

A figure in which every length in the original figure is multiplied by a scale factor

Vertex

A point where two or more straight lines meet.

Perfect Square

A square root of a number that comes out as a rational number

Protractor

A tool used to measure and draw angles.

Scale Factor / Multiplier

The number that you multiply the dimensions of a shape by to create a scaled copy

Corresponding Parts

The parts (angles or sides) are in the same relative position in 2 different figures

Reciprocal

(mathematics) one of a pair of numbers whose product is 1: the reciprocal of 2/3 is 3/2