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What makes a triangle equilateral, isosceles, or scalene?

How are these triangles the same? How are they different? Manipulate the triangles by dragging their blue corner points. What happens to their side lengths?

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רישום חופשי
Line Reflection Questions V2
Proving Triangles Congruent (2): One Step Transformations
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Trophy (version 2)

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Angle Pairs in Parallel Lines
Special Segments and Points of Concurrency in Triangles
Lines of Symmetry
Incenter

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Geometric Mean
Trapezoid
Median Line
Percentages
Fractal Geometry