IXL | Side lengths and angle measures of similar figures | 7th grade math

or

If these two shapes are similar, what is the measure of the missing length q?

12 mm

4 mm

q

1 mm

q = millimeters

ref_doc_title.

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Learn with an example

question

If these two figures are similar, what is the measure of the missing angle?

132°

48°

132°

48°

?

°

key idea

Corresponding angles in similar shapes have the same measure.

solution

Rotate the figures to match up the corresponding parts.

132°

48°

132°

48°

?

Look at the angle with the question mark. Find the corresponding angle in the other shape.

132°

?

Since the shapes are similar, the measure of the missing angle is also 132°.

Looking for more? Try these:

Lesson: Similarity

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$Confetti$

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Teacher tools

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Not feeling ready yet? These can help:

L.12Solve proportions

FF.1Similar and congruent figures

Lesson: Similarity