MCQ
If two angles are supplementary and one angle is double the other, then the larger angle is:
- A$60^\circ $
- B$90^\circ $
- ✓$120^\circ $
- D$180^\circ $
✓
Answer
Correct option: C.
$120^\circ $
$ x^\circ + 2x^\circ = 180^\circ$
$\Rightarrow 3x^\circ = 180^\circ$
$\Rightarrow x^\circ = 60^\circ$
$\Rightarrow 2x^\circ = 120^\circ$
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