Jawaban:
125° ( D )
Penjelasan dengan langkah-langkah:
=> 3x - 25 + x + 5 = 180°
=> 4x - 20° = 180°
=> 4x =180° + 20°
=> x = 200÷4
=> x = 50°
Karena <L = <N maka
<L = <N = ( 3x - 25 )
<L = <N = ( 3 × 50 ) - 25
= => 150 - 25
= => 125°
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Jawaban:
125° ( D )
Penjelasan dengan langkah-langkah:
=> 3x - 25 + x + 5 = 180°
=> 4x - 20° = 180°
=> 4x =180° + 20°
=> x = 200÷4
=> x = 50°
Karena <L = <N maka
<L = <N = ( 3x - 25 )
<L = <N = ( 3 × 50 ) - 25
= => 150 - 25
= => 125°