IXL | Scale drawings of polygons

Parallelogram

is a scaled copy of parallelogram

What scale factor takes parallelogram

to parallelogram

ref_doc_title.

Learn with an example

Trapezoid

is a scaled copy of trapezoid

What scale factor takes trapezoid

to trapezoid

A scaled copy of a figure has the same shape as the figure but is a different size.

The angle measures of a scaled copy are equal to the corresponding angle measures of the figure.
The side lengths of a scaled copy can be found by multiplying the corresponding side lengths in the figure by the same number. This number is called the scale
factor.

To find the scale factor from trapezoid

to trapezoid

first identify a pair of corresponding sides.

You know that 15 times the scale factor is equal to 18. Write and solve an equation for the scale factor,

Divide both sides by 15

Simplify

So, the scale factor is

Looking for more? Try this:

$Confetti$

Now entering the Challenge Zone—are you ready?

hr	min	sec
00	00	04

Teacher tools

Work it out

Not feeling ready yet? These can help: