Question

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Answer 1

Explicación paso a paso:

1

180=x+100+38

x=180-100-38

x=42°

2.

180=x+80+60

x=180-80-60

x=40°

3.

180=70+60+ <ACB

<ACB=180-70-60

<ACB=50

Entonces

<ACB+x=180

x=180- <ACB

x=180-50

x=130°

4.

2x+3x+x=180

6x=180

x=180/6

x=30°

Entonces

<BAC = 2x=2(30)=60°

<ABC=3x=3(30)=90°

<ACB=x=30°