The angle LJK is larger than 90 degrees, so that's why it is obtuse.
If you want, place segment JK so it is completely flat on the ground or parallel to it. Then draw a vertical line through point J. Mark point M above point J on this vertical line somewhere. Angle MJK is a right angle (90 degrees) and we see that LJK is larger than 90 as it extends past point M.
LJK is obtuse
Acute angles are less than 90 degrees
Right angles are 90 degrees
Obtuse angles are greater than 90 degrees
Straight angles = 180 degrees
Zero angles are a ray
This angle is greater than 90 but less than 180 so it is obtuse
answer: 819.89 miles across america
calculation tip: common types of angles are zero, straight...