## Geometry: Common Core (15th Edition)

$m\angle LKH =35$; acute $m\angle HKN =180$; straight $m\angle MKH =145$; obtuse
$m\angle LKH =|180-145|=|35|=35$; acute since the angle is less than 90 $m\angle HKN =|180-0|=|180|=180$; straight since the angle is 180 $m\angle MKH =|180-35|=|35|=145$; obtuse since the angle is between 90 and 180