1. ©G Dear2008 – Not to be sold/Free to use
Mathematic
(HSC)
Geometry
Revision
Stage 6 - Year 12
Press Ctrl-A
©G Dear2008 – Not to be sold/Free to use

2. Types of Angles 1. Acute angles 2. Right Angle 3. Obtuse Angle
(0o < θ < 90o
θ = 90o
(90o < θ < 180o)
4. Straight Angle
5. Reflex Angle
(θ = 180o)
6. Angle of Revolution
(180o < θ < 360o)
(θ = 360o)

3. Pairs of Angles 1. Vertically Opposite Angle are equal.ao bo
2. Complementary Angles
add to 90o. ao bo
2. Supplementary Angles
add to 180o.

4. Angles between Parallel Lines
Transversal
1. Alternate Angles
3. Co-Interior angles
2. Corresponding Angles
Makes a Z shape.
Makes a C shape.
and
are equal.
Makes a F shape.
and
Add to 180o
and
are equal.