Similarity (geometry)

High school (ages 12+)
Mathematics & Numbers

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/similarity-geometry

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What does it mean for two shapes to be similar?Two shapes are similar when they look the same but can be different sizes. The angles stay the same, but the sides can be longer or shorter by the same amount.
2. How can we tell if two triangles are similar?Two triangles are similar if two of their angles match. This is called the Angle-Angle (AA) rule.

Isometry: A transformation that preserves distance and angles, such as translation, rotation, or reflection.
Scale Factor: The constant ratio between corresponding linear measurements of two similar geometric figures.
Proportionality: The state of having sides whose lengths maintain a constant ratio between similar figures.