Question

In figura 6 ABIIDE 2×unghiulABK=3×unghiulBEF
Calculati masurile unghiurilor DEL si CBK

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Answer 1

Răspuns:

Explicație pas cu pas:

2abk =3 bef

abk= 3bef/2

abk= fel (unghiuri alterna externe)

bef+fel= 180°(unghiuri suplementare)

²⁾bef+3bef/2=180°

5bef/2=²⁾180⁰

5bef= 360

bef= 360:5

bef= 72⁰

fel= 3bef /2

fel=72/2*3

fel= 36*3

fel =108⁰

Dar del= bef (uunghiri in jurul unui punct )

del= 72⁰

cbk= del (unghiuri alterne externe )

cbk=72⁰