Similar Shapes and Scale Drawings

Front

What are similar shapes?

Back

Shapes that have the same shape but different sizes. Their corresponding angles are equal, and their corresponding sides are in proportion.

Front

What is a scale drawing?

Back

A drawing that represents an object or structure at a specific ratio to its actual size.

Front

If a scale is 1 inch = 4 feet, how do you find the actual height of an object?

Back

Multiply the measurement in inches by the scale factor (4 feet) to find the actual height.

Front

What is a proportion?

Back

An equation that states that two ratios are equal.

Front

What are corresponding sides?

Back

Sides of similar shapes that are in the same relative position.

Front

How do you solve for a missing side in similar shapes?

Back

Set up a proportion using the lengths of the corresponding sides and solve for the unknown.

Front

If two shapes are similar, what can you say about their angles?

Back

Their corresponding angles are equal.

Front

What is the formula to find the height of an object using a scale drawing?

Back

Height in feet = Height in inches × Scale factor.

Front

What does it mean if two shapes are congruent?

Back

They are identical in shape and size; all corresponding sides and angles are equal.

Front

How do you determine if two shapes are similar?

Back

Check if their corresponding angles are equal and their corresponding sides are in proportion.