Question

If we have an ∠ABC as $\theta$, then reflex ∠ABC is equal to ________________.

• A. ${180}^0$ - $\theta$
• B. -${180}^0$+$\theta$
• C. ${360}^0$ - $\theta$
• D. ${360}^0$+$\theta$

Answer 1

The correct option is C

${360}^0$ - $\theta$

From the figure, we can see that
∠ABC + Reflex ∠ABC = 360${}^{\circ }$

So, Reflex ∠ABC = 360${}^{\circ }$ - $\theta$

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