<P = <Q (karena sama kaki)
Jumlah semua sudut ∆ = 180°
<P + <Q + <R
(2x+5)°+(2x+5)°+x° = 180°
4x° + 10° +x° = 180°
5X° = 170°
x = 34°
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<P = <Q (karena sama kaki)
Jumlah semua sudut ∆ = 180°
<P + <Q + <R
(2x+5)°+(2x+5)°+x° = 180°
4x° + 10° +x° = 180°
5X° = 170°
x = 34°