Question

In $\Delta ABC,\angle A={56}^o$ and $\angle B={60}^o.$ What is the measure of $\angle C?$

• A. ${64}^o$
• B. ${65}^o$
• C. ${66}^o$
• D. ${67}^o$

Answer 1

The correct option is A ${64}^o$

By angle sum property, the sum of angles is ${180}^o$.

$\angle A+\angle B+\angle C={180}^o$

${56}^o+{60}^o+\angle C={180}^o$

$\angle C={180}^o-{116}^o$

$\angle C={64}^o$