find the angles

Argomento:Angoli

ABCD is a square and

. If you know one of the marked angle, which other angles can you find? If you change the position of point E, can you find other missing angles in the same way?

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Tanzanian Ngoma - Model 1
apec
Slopes of Parallel Lines
Tanzanian Ngoma - Model 3

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Transforming cos with toolbars
Angle Bisectors of Triangles
Daisy Martinez Euler Line
Proof Exercise: Inscribed Angle Theorem (Case 3)
Play with sine

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Diagrammi
Prisma
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Quadrilateri
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