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GeoGebra Classroom

Exploring Dilations in the Coordinate Plane

作成者:Alice Wanty, Rick Stuart, Kim Kembitzky, Katrina Cushenberry

トピック:拡張

Explore dilations on the following graph by sliding the scale factor button. Then answer the questions below.

Dilations

Triangle ABC is the preimage, and triangle A'B'C' is the image after dilation.

When the scale factor is a decimal less than one, how does triangle A'B'C' compare to triangle ABC?

該当するものを全て選択

A
A'B'C' is smaller and located below ABC.
B
A'B'C' is larger and located above ABC.
C
The two triangles are congruent.

答 (3)を確認

Triangle ABC is the preimage, and triangle A'B'C' is the image after dilation.

When the scale factor is 2, how does triangle A'B'C' compare to triangle ABC?

該当するものを全て選択

A
A'B'C' is smaller and located below ABC.
B
A'B'C' has side lengths 2 times larger than ABC and is above ABC.
C
The two triangles are congruent.
D
A'B'C' has side lengths 1/2 times smaller than ABC and is above ABC.

答 (3)を確認

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