Jawaban:
semoga membantu
maaf kalo salah
10.
a. besar ∠CGB = 120°
b. besar ∠BGE = 60°
c. besar ∠AGD = 90°
d. besar ∠DGE = 30°
11.
a. besar ∠ZXV = 115°
b. besar ∠YXW = 115°
c. besar ∠ZXY = 65°
d. besar ∠VXW = 65°
Penjelasan dengan langkah-langkah:
10. dari gambar, diketahui:
∠CGA = 60°
∠AGB = 180°
∠CGE = 180°
∠AGD = 90°
∠BGD = 90°
a. besar ∠CGB
∠AGB = ∠CGB + ∠CGA
180° = ∠CGB + 60°
∠CGB = 180° - 60°
∠CGB = 120°
b. besar ∠BGE
∠CGE = ∠BGE + ∠CBG
180° = ∠BGE + 120°
∠BGE = 180° - 120°
∠BGE = 60°
c. besar ∠AGD
∠AGD membentuk siku2, Jadi besar ∠AGD = 90°
d. besar ∠DGE
∠BGD = ∠DGE + ∠BGE
90° = ∠DGE + 60°
∠DGE = 90° - 60°
∠DGE = 30°
11. dari gambar, diketahui:
∠ZXV = (2x + 65)°
∠YXW = (4x + 15)°
∠YXV = 180°
∠ZXW = 180°
Karena bentuk ∠ZXV dan ∠YXW itu kongruen (sama persis), maka
∠ZXV = ∠YXW.
Mencari nilai x:
∠ZXV = ∠YXW
2x + 65° = 4x + 15°
2x - 4x = 15 - 65
-2x = -50°
x = -50° ÷ -2
x = 25°
a. besar ∠ZXV
∠ZXV = (2(25°) + 65)°
∠ZXV = (50° + 65)°
∠ZXV = 115°
b. besar ∠YXW
∠YXW = (4(25°) + 15)°
∠YXW = (100° + 15)°
∠YXW = 115°
c. besar ∠ZXY
∠ZXW = ∠ZXY + ∠YXW
180° = ∠ZXY + 115°
∠ZXY = 180° - 115°
∠ZXY = 65°
d. besar ∠VXW
∠ZXW = ∠VXW + ∠ZXV
180° = ∠VXW + 115°
∠VXW = 180° - 115°
∠VXW = 65°
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Jawaban:
semoga membantu
maaf kalo salah
Verified answer
Jawaban:
10.
a. besar ∠CGB = 120°
b. besar ∠BGE = 60°
c. besar ∠AGD = 90°
d. besar ∠DGE = 30°
11.
a. besar ∠ZXV = 115°
b. besar ∠YXW = 115°
c. besar ∠ZXY = 65°
d. besar ∠VXW = 65°
Penjelasan dengan langkah-langkah:
10. dari gambar, diketahui:
∠CGA = 60°
∠AGB = 180°
∠CGE = 180°
∠AGD = 90°
∠BGD = 90°
a. besar ∠CGB
∠AGB = ∠CGB + ∠CGA
180° = ∠CGB + 60°
∠CGB = 180° - 60°
∠CGB = 120°
b. besar ∠BGE
∠CGE = ∠BGE + ∠CBG
180° = ∠BGE + 120°
∠BGE = 180° - 120°
∠BGE = 60°
c. besar ∠AGD
∠AGD membentuk siku2, Jadi besar ∠AGD = 90°
d. besar ∠DGE
∠BGD = ∠DGE + ∠BGE
90° = ∠DGE + 60°
∠DGE = 90° - 60°
∠DGE = 30°
11. dari gambar, diketahui:
∠ZXV = (2x + 65)°
∠YXW = (4x + 15)°
∠YXV = 180°
∠ZXW = 180°
Karena bentuk ∠ZXV dan ∠YXW itu kongruen (sama persis), maka
∠ZXV = ∠YXW.
Mencari nilai x:
∠ZXV = ∠YXW
2x + 65° = 4x + 15°
2x - 4x = 15 - 65
-2x = -50°
x = -50° ÷ -2
x = 25°
a. besar ∠ZXV
∠ZXV = (2x + 65)°
∠ZXV = (2(25°) + 65)°
∠ZXV = (50° + 65)°
∠ZXV = 115°
b. besar ∠YXW
∠YXW = (4x + 15)°
∠YXW = (4(25°) + 15)°
∠YXW = (100° + 15)°
∠YXW = 115°
c. besar ∠ZXY
∠ZXW = ∠ZXY + ∠YXW
180° = ∠ZXY + 115°
∠ZXY = 180° - 115°
∠ZXY = 65°
d. besar ∠VXW
∠ZXW = ∠VXW + ∠ZXV
180° = ∠VXW + 115°
∠VXW = 180° - 115°
∠VXW = 65°