Question

Besar pelurus dari sudut ABD adalah...

bantu jawab dong​

Answer 1

Jawaban:

b 37°

Penjelasan dengan langkah-langkah:

ABD + BCD = 180° (sudut lurus)

4x + 15 + x + 5 = 180°

5x + 20 = 180°

5x = 180 - 20

5x = 160

x = 160/5

x = 32°

ABD

= 4x + 15

= 4.32° + 15

= 143°

Besar pelurus sudut ABD

= 180° - 143°

= 37° (B).