(Jimmy of the Clue Crew shows an animated angle on the monitor.)  With a measure of less than 90 degrees, an angle like the one seen here is referred to as this type of angle
Obtuse angles measure  more than ... [DOC] [TLE] Types of Angles - Free Math Help [PAR] Acute angles have a measure less than 90 degress, right angles have a measure 
of exactly ... One subject you'll want to be familiar with is the different types, or 
classifications, ...