Question

7: What is the measure of the angle in red?

Answer 1

According to the image,

$\angle red=360\degree+\angle blue$

On the other hand, the green and blue angles are complementary; therefore,

$\begin{gathered} \angle blue+\angle green=90\degree \\ \angle blue=90\degree-70\degree=20\degree \end{gathered}$

Thus,

$\Rightarrow\angle red=360\degree+20\degree=380\degree$

Hence, the answer is 380°, option C.