Question

diketahui besar <abc=40°. tentukan besar :
a.<aoc
b.<oac
c.<oca​

Answer 1

Penjelasan dengan langkah-langkah:

Jumlah sudut segitiga 180°

< OAC = < OCA

< OAC + < OCA + < ABC = 180°

x° + x° + 40° = 180°

2x° + 40° = 180°

2x° = 180° - 40°

2x° = 140°

x° = 140 / 2

x° = 70°

b. dan c. < OAC = < OCA = 70°

a. < AOC = 2 x 70°

= 140°