1.

If angles of magnitude (2x + 4) and (x – 1) form a linear pair. Find these angles.

Answer»

According to question

(2x + 4)° + (x – 1)° = 180°

(Linear pair axiom)

⇒ 3x + 3 = 180

⇒ 3x = 177

\(x=\frac { 177 }{ 2 }=59\)

∴ Angles are (2 x 59 + 4)° = 122° 

and (59 – 1)° = 58



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