corexmathInteractive Lessons
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INTERACTIVE GEOMETRY

Similarity

Compare lengths, areas and volumes as shapes change size.

Lengths × k · Areas × k² · Volumes × k³
● Original● Similar image

Drag the original shape’s coloured points to change its base and height.

SIMILARITY EXPLORER

Same shape. Different size.

Lengths ×2
Areas ×4
Volumes ×8
Investigate

The same display scale is used for both shapes. Cuboids are drawn in an oblique view; use the dimension labels for their true lengths.