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KaylaneMartins
@KaylaneMartins
December 2019
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Urgente!!
Calcule os ângulos indicados pelas letras nas figuras:
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Deah
OBS.: ângulos opostos pelo vértice possuem a mesma medida.
OBS.2: um ângulo raso mede 180°
z = 108°
x = y = 72°
x + 108 = 180
x = 72°
x = 95°
z = 17°
w = y = 68°
17 + 95 + w = 180°
112 + w = 180
w = 68°
y = 45°
x = 120°
120 + z = 180°
z = 60°
2x - 30 + 3x + 20 = 180
5x - 10 = 180
5x = 190
x = 38°
y = 2x - 30
y = 2*38 - 30
y = 76 - 30
y = 46°
1 votes
Thanks 2
KaylaneMartins
Mto obg!! Mas acho que faltou a letra D... :p
Deah
=)
Deah
Editado.
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Lista de comentários
OBS.2: um ângulo raso mede 180°
z = 108°
x = y = 72°
x + 108 = 180
x = 72°
x = 95°
z = 17°
w = y = 68°
17 + 95 + w = 180°
112 + w = 180
w = 68°
y = 45°
x = 120°
120 + z = 180°
z = 60°
2x - 30 + 3x + 20 = 180
5x - 10 = 180
5x = 190
x = 38°
y = 2x - 30
y = 2*38 - 30
y = 76 - 30
y = 46°