Mathematics
Mathematics, 04.12.2020 17:00, 44chandracloutier

Rozwią2 zadanie. a) W trójkącie równoramiennym ABC ramiona AC I BC tworzą kąt 100º. Ob-

licz miarę kąta rozwartego, jaki tworzą dwusieczne kątów przy podstawie

tego trójkąta.

с

100°

D

y = ?

B

B

B

Obliczamy kąt przy podstawie trójkąta, korzystając z twierdzenia o sumie

kątów trójkąta i z własności trójkąta równoramiennego.

B =(180° - ): 2 = 1

Wobec tego kąt DAB jest równy

oraz kąt DBA

jest równy

Obliczamy kąt y, korzystając z sumy kątów trójkąta ABD.

Y =

Odnowiedz:

answer
Answers: 3

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Rozwią2 zadanie. a) W trójkącie równoramiennym ABC ramiona AC I BC tworzą kąt 100º. Ob-

...

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