Matematika Sekolah Menengah Pertama sama caranya ya kak makasih (◍•ᴗ•◍)❤​

erickabrownulv – March 06, 2023

sama caranya ya kak makasih (◍•ᴗ•◍)❤​

Jawaban:

8. 3x + 15 + 2x + 10 = 180

5x + 25 = 180

5x = 155

x = 31

< KLN = 3(31) + 15

< KLN = 93 + 15

< KLN = 108°

9. < A4 = 180 - 115 = 65°

< B4 = < A4 = 65°

< B1 = < A1 = 115°

< A4 + < B4 + < B1

= 65° + 65° + 115°

= 245°

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