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Lines and Angles — MATHS STD 7 — Question

Gujarat BoardEnglish MediumSTD 7MATHSLines and Angles1 Mark
MCQ
Find the angle which is $20^\circ $ more than its supplement.
  • A
    $90$
  • B
    $95$
  • ✓
    $100$
  • D
    $105$
✓

Answer

Correct option: C.
$100$

Let the required angle be $x,$ then its supplement $= (180 - x)$
Given that $x = (180 - x) + 20$
$⇒ 2x = 200$
$\Rightarrow x = 100^\circ $

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