Jawaban:
9. jumlah sudut segitiga = 180°
180° = 100° + 30° + y
180° = 130° + y
y = 180° - 130°
y = 50°
karena sudut x dan y (sebelahnya) adalah sudut berpelurus, maka:
x + y = 180°
x + 50° = 180°
x = 180° - 50°
x = 130°
10. <CTA = 180° - ( <TAC + <TCA )
= 180° - ( 30° + 30° )
180° - 60°
= 120°
<BTA = 180° - <CTA
= 180° - 120°
= 60°
semoga nembantu>3
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Jawaban:
9. jumlah sudut segitiga = 180°
180° = 100° + 30° + y
180° = 130° + y
y = 180° - 130°
y = 50°
karena sudut x dan y (sebelahnya) adalah sudut berpelurus, maka:
x + y = 180°
x + 50° = 180°
x = 180° - 50°
x = 130°
10. <CTA = 180° - ( <TAC + <TCA )
= 180° - ( 30° + 30° )
180° - 60°
= 120°
<BTA = 180° - <CTA
= 180° - 120°
= 60°
semoga nembantu>3