SolveMyMaths Action 3A!

Argomento:Area

Creation of this applet was inspired by a tweet from Ed Southall (Solve My Maths). In the regular hexagon below, how can you formally prove that the area of the original triangle and parallelogram are equal?

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Domain of f(x,y)
Trammel of Archimedes Art
Other Variations of Cosine
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Rule of Sarrus - Determinant of a 3×3 Matrix

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Forum_f=2&t=37926_D5_TiangleTorque
Hagdorn and Fallon_Section 2
Roller Coaster 2
Geogreba sketches 2
actvt_2
greenhouse 57

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Congruenza
Logaritmi
Interi
Coordinate
Similitudini e trasformazioni di similitudine