Plane Geometry · Maths

Similar triangles

Similar triangles is an interactive experiment in Plane Geometry, a free simulation from StudyFi Lab that runs right in your browser.

Scaling a triangle by a factor k multiplies every side by k and the area by k²; the angles stay the same.

Try this: Drag the triangle or change k — compare the sides, the angles and the areas.

Frequently asked questions

What does the “Similar triangles” experiment show?

Scaling a triangle by a factor k multiplies every side by k and the area by k²; the angles stay the same.

How do I try “Similar triangles”?

Drag the triangle or change k — compare the sides, the angles and the areas.

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