__Corresponding angles:__ Corresponding angles are two angles that form an 'F' like
shape. Corresponding angles are created when a line crosses two parallel lines. The angles which are the same are the
2 obtuse angles. You can see a diagram of Corresponding angles at the bottom of this page.

__Opposite angles:__ Opposite angles are two angles that share a vertex. Opposite
angles are always equal, and are formed when two straight lines intersect.The angle striaght across from an angle is the same
size as that angle.

__Reflex angle:__ A reflex angle is an angle that is larger than 180º.

__Right angle:__ A right angle is an angle of exactly 90º.

__Straight angle:__ A straight angles is an angle of exactly 180º.

__Acute angle:__ an acute angle is an angle which is smaller than 90º.

__Obtuse angle:__ An obtuse angle is an angle that is smaller than 180º, but larger
than 90º.