Angles in a triangle add up to 180 degrees
Angles in a quadrilateral add up to 360 degrees
Angles on a straight line add up to 180 degrees
Opposite angles are equal
Corresponding angles are equal
Alternate angles are equal
Co-interior angles add to 180 degrees
Sine rule
Area of a right-angled triangle
½ x base x height
Cosine rule
Area of non right-angled triangles
½ x a x b x sinC
WRITE DOWN A TABLE OF EXACT VALUES NOW
SOH CAH TOA