MCQ
In the below figure, the value of $x$ is:
- A$30^\circ$
- ✓$10^\circ$
- C$15^\circ$
- D$25^\circ$
✓
Answer
Correct option: B.
$10^\circ$
$2x - 20^\circ + x + 100^\circ = 110^\circ $ (Exterior angle is equal to sum of its interior opposite angles)$3x = 110^\circ - 100^\circ + 20^\circ$
$x = 10^\circ .$
$x = 10^\circ .$
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