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Francés-Lengua extranjera

Geometric ratio

This unit deals with some formulae connected to Thales' theorem. Rather than giving rigorous, step-by-step demonstrations, this unit offers the advantage of verifying conclusions and properties in a s ...

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Equipo Didactalia

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Francés-Lengua extranjera

Homothety and Similarity

This unit deals with some of the basic concepts of homothety (or enlargement) and some formulae connected to Thales' theorem. Rather than rigorous, step-by-step demonstrations, this unit offers the ad ...

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Francés-Lengua extranjera

Similarity

This unit deals with some formulae connected to proportionality between segments and Thales' theorem. Rather than giving rigorous, step-by-step demonstrations, this unit offers the advantage of verify ...

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Equipo Didactalia

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Francés-Lengua extranjera

Trigonometrical ratios

As Thales' theorem tells us, trigonometrical ratios of an angle do not depend on the right-angled triangle we choose. Therefore, we can choose a right-angled triangle whose hypotenuse is the radius of ...