Naming and measuring angles. 

 - 1 videodisc (DVD) (23 min.) : sound, color  4 3/4 in. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Angles (Geometry)--Measurement.
<br/><br/><label>Dewey Class. No.: </label>516.152 N174 2007