Angles at a point add up to?
360
When two lines cross they form TWO PAIRS of angles OPPOSITE each other that are the SAME SIZE
E.g.
a= c=
&
b= d=
Angles in a triangle add up to?
180
ALTERNATE ANGLES/Z ANGLES
Are equal
CORRESPONDING ANGLES/F ANGLES
Are equal
SUPPLEMENTARY ANGLES/C ANGLE
Add up to 180
Angles on a straight line add up to?
180