In geometry, an angle can be defined as the figure formed by two rays meeting at a common end point. An angle is represented by the symbol ∠. Here, the angle below is ∠AOB. Angles are measured in degrees, using a protractor and to 180°. When angles share a vertex and fill the space around a point, they add to 360°. When two lines cross, opposite angles are equal. When a line crosses parallel lines, alternate angles are equal. types of angles. Acute Angle. An acute angle lies between 0 degree and 90 degrees, or in other words; an acute angle is one that is less than 90 degrees. ... Obtuse Angle... Right Angle.... Straight Angle...
A tip for keeping the paper positioned at a 45 degree angle, until it becomes a habit, is to fold over the left hand lower corner of the paper for right-handed writers and the right hand for left-handed writers. The fold is then positioned so that it is parallel to the edge of the table closest to the child.
