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Verified answer
11.→ a] Segitiga sama kakiSudut P = sudut R
Q = 180° - 112°
Q = 68°
Maka Sudut P
= [180° - 68°] /2
= 112°/2
= 56° ✔
11. → b]
Sudut B = 180° - 5p
⏩Jumlah Sudut ∆ = 180°
Maka,
A + B + C = 180°
48° + 180° - 5p + 3p = 180°
228° - 2p = 180°
2p = 228° - 180°
2p = 48°
p = 48°/2
p = 24°
karena sisi PQ sama panjang dengan sisi RQ, maka
Sudut P=180-Q×½
sudut P=56
nomor 2.)
A+B+C=180
sudut B=180-5p
48+180-5p+3p=180
228-2p=180
-2p=180-228
-2p=-48
P=-48/-2
P=24
maaf kalau salah