Question

Match the following.

• A. $={90}^{\circ }$
• B. $={180}^{\circ }$
• C. $<{90}^{\circ }$ , $>0^o$
• D. $>{180}^o$, $<{360}^o$

Answer 1

$0^{\circ }<\theta <{90}^{\circ }$, it is an acute angle.
$\theta ={90}^{\circ }$, it is a right angle.
${90}^{\circ }<\theta <{180}^{\circ }$, it is an obtuse angle.
$\theta ={180}^{\circ }$, it is a straight angle.
${180}^{\circ }<\theta <{360}^{\circ }$, it is a reflex angle.
$\theta ={360}^{\circ }$, it is a complete angle.