An curved arrow pointing right. If you look closely at a quarter or a dime, you'll see tiny grooves all along the edge. They were put there for a very important reason. The process is called ...

A right angle is 90° or a quarter turn. It looks like the corner ... s vertex - the point where two lines meet. Line up one side of the angle with the zero line on the protractor.

There are two ways to construct a triangle using a ruler and a protractor. The first is a Side, Angle, Side (SAS) construction where two sides and the angle between them is known. The second is an ...