Dilation & similarity

About this app

Dilate a figure from the center Z with factor k: rays through every vertex, ZP′ = k·ZP. k=1 → congruent (congruence), k<0 → point reflection. Live: lengths ×|k|, area ×k². Z and the vertices freely draggable.

Subject: School mathematics (Gymnasium)

More from School mathematics (Gymnasium)

• Tree diagram & path rules
• Binomial identities through geometry
• The number π
• Unit circle & sine curve
• Exponential growth & decay
• Ulm’s glass pyramid
• Equation balance
• Half-life & decay

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