Matematika Sekolah Menengah Pertama Perhatikan gambar gambar dibawah! tolong bantu jawab yaa​

delphiaweimannulv – May 12, 2023

Perhatikan gambar gambar dibawah!
tolong bantu jawab yaa​

<AOB = ( x + 10 )⁰, <BOC = ( 2x + 20 )⁰

a. <AOB + <BOC = 180⁰( sudut berpelurus )

( x + 10 )⁰ + ( 2x + 20 )⁰ = 180⁰

3x + 30⁰ = 180⁰

3x = 180⁰ - 30⁰

3x = 150⁰

x = 50⁰

b. <AOB = x + 10⁰ = 50⁰ + 10⁰ = 60⁰

Penyiku <AOB = 90⁰ - <AOB

= 90⁰ - 60⁰

= 30⁰

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