With a protractor, the angles of any shape can found where two lines meet and form a corner. The shapes themselves can also be identified from this by matching the angles to the shape properties.

Use This Simple Trick to Measure an Angle Using Only a Level It's all about the plumb.

Electronic enthusiasts that need to measure angles on their robotic arm or other projects may be interested in a new proximity sensor that has been created by William Moore called the Protractor.

Actually, you would have to take your angle measurement and subtract from 90° to get your latitude. Also, there is a straw on top of my protractor to assist with the aiming—and it looks cool.

Object Details maker Central Scientific Company inventor Penfield, Samuel Lewis Description It may seem obvious that surveyors, navigators, and mathematics students would need to measure angles. These ...