Key Takeaways from Math Lesson

For Linear Inequalities:

  1. A
  2. AB therefore A
  3. A>C, BA

Points to take note:

Where there is a fraction, round it off to 3 Significant Figures

Always draw a number line

When they are two inequalities, solve each inequality and the unknown (x) has to be between a range from both equation.


For Angles and Parallel Lines:

Definitions: Point - Position, No

Lines - Infinite number of points, No width, Determine by 2 points, Can be curved

Segment - Finite length, part of a line

(Usually not tested)Ray - One end fixed, the other infinite

Plane - Any flat surface, no thickness

Angles:

Complementary angle - Comp <

Supplementary angle - Supp < / <>

Adjacent angle -

<>

Angle at a point - <>

Acute angle : 0 degree <>

Right angle : x = 90 degree

Obtuse angle : 90 degree <>

Straight angle : 180 degree

Reflex angle : x > 180 degree

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