The Complete Quadrilateral

Autore:Steve Phelps

The complete quadrilateral consists of four coplanar straight lines – l₁, l₂, l₃and l₄– intersecting in three pairs of opposite vertices – A₁₄, A₂₃ , A₁₃, A₂₄ , A₁₂and A₃₄.

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兩位數的位值
Average Value
רישום חופשי
Area Between Two Curves
Visualizing the Pythagorean Identity with Sine and Cosine

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Fitting the Sine Function
Worksheet to accompany these applets.
task 2
toolselect

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Rette
Perimetro
Rette tangenti
Similitudini e trasformazioni di similitudine
Congruenza