Question

Tolong di jawab y no.20

Answer 1

A. 2x-5+x+4x+2x+x=180
10x-5=180
10x=185
x=18,5
b. aoc = 2x-5+x = 3x-5 = 3(18,5)-5 = 50,5
c. cod=4x = 4(18,5)= 74
d. fod = 2x+x= 3x = 3(18,5) = 55,5

Answer 2

AOF merupakan sudut pelurus =180⁰

jadi
(2x-5)+x+4x+2x+x=180
10x-5=180
10x=180+5
10x=185
x=18,5⁰

Aoc=AOB+BOC
AOC=2x-5+x
AOC=2.18,5-5+18,5
AOC=50,5⁰

COD=4x
COD=4.18,5
COD=74⁰

DOF=DOE+EOF
DOF=2x+x
DOF=2.18,5+18,5
DOF=55,5⁰

pelurus DOF=180⁰-55,5⁰=124,5⁰