Question

The measure of $\angle BCD$ is

• A. ${70}^{\circ }$
• B. ${100}^{\circ }$
• C. ${120}^{\circ }$
• D. ${110}^{\circ }$

Answer 1

The correct option is D ${110}^{\circ }$


Using the "Exterior angle property" of a triangle, we get,
$\angle BCD=\angle ABC+\angle BAC$
$\angle BCD={25}^{\circ }+{85}^{\circ }$
$\angle BCD={110}^{\circ }$