Dear Parents,
Below is information regarding Unit 5, Staying in Shape.
Staying in Shape:
Students will be able to:
- Create similar shapes by enlarging or reducing a geometric figure in the coordinate plane.
- Given a figure in the coordinate plane, determine the coordinates resulting from a dilation.
- Describe similarities by listing corresponding parts.
- Find missing side lengths or areas in similar figures.
Vocabulary
Dilation: A type of transformation where a figure’s size is increased or decreased.
Ratio: The relationship of two quantities a and b that are measured in the same unit.
Proportion: An equation that equates two ratios.
Scale Factor: The ratio of the lengths of two corresponding sides of two similar polygons.
Similar Figures: Two figures such that their corresponding angles are congruent and their corresponding sides are proportional. The symbol for “is similar to” is .
Congruent Figures: Two figures that have exactly the same size and shape. All pairs of corresponding angles and corresponding sides are congruent. The symbol for “is congruent to” is
