4. ACUTE
LESS THAN 90 DEGREES.
http://f.tqn.com/y/math/1/L/H/D/acuteangle.jpg
http://education-
portal.com/cimages/multimages/16/photokitchentongs.pn
g
http://1.bp.blogspot.com/-
I6gKbCWWm20/UKBKPYKL2II/AAAAAAAAAA0/E2Gh-
MQNTYs/s1600/lunapic_135267592459254_12.gif
http://www.craftynest.com/wp-content/uploads/2009/12/DSCF5036.jpg
5. Obtuse Angles
• Measures more than 90
degrees.
http://www.old.mathleague.com/help/geometry/IMG00037.GI
F