tolongin please :) jam 3 kumpul, mksh
Jawaban:
3.
a)∠ASC=
180-ASD
=180-135
=45°
.
b)∠ASD=
180-45
=135°
.
c)∠BSC=
180-ASC
=180-45
=135°
.
.
4.
a)nilai x=
3x+5x+20=180
3x+5x=180-20
3x+5x=160
8x=160
x=160/8
x=20°
.
b)∠PRS=
3x
=3×20
=60°
.
c)∠QRS=
5x+20
=5×20+20
=100+20
=120°
.
.
5.
a) nilai x=
2x+3x+3x+40=360
2x+3x+3x=360-40
8x=320
x=320/8
x=40°
.
b)∠COD=
2x
=2×40
=80°
.
c)∠DOA=
=40°
Sudah ada pada gambar
.
d)∠COB=
3x
=3×40
=120°
.
.
.
.
.
Semoga membantu
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