Summary (Grade 12 NSC Matric Mathematics): Flashcards

Relationship between two quantities with same units

x:y, x/y, x to y

When two or more ratios are equal

Line || to side divides other 2 sides in same proportion

Line joining mid-pts is || to 3rd side & half its length

Line from mid-pt || to side bisects 3rd side

Equal corresponding angles AND sides in same proportion

If equiangular or sides in proportion

$c^2 = a^2 + b^2$ (hypotenuse² = sum of other squares)

If $c^2 = a^2 + b^2$, angle between a & b is right angle