- angles/geometry (Supplementary, complementary, alternate, etc. / Properties of regular polygons, general area and volume formulas, maybe a couple of irregular ones like cones and spheres)
You can find all this stuff in your closest general maths/further textbook (and probably 9/10)- Methods Trig as a foundation (but make sure you're 100% on it because it's unlikely to be covered in class)
- Circles (chords, arcs, angle rules, etc.)
Best bet for finding these without a GMA/Spesh textbook is probably a google search- Modulus function (No longer in Methods but it's in spesh)
- complex numbers (Covered in GMA and the new spesh 1/2)
Probably only going to find this in GMA/Spesh textbooks, best bet is google if you don't have access to those- Vectors (Get on top of this one, it's a whole area of study)
Again, probably only going to find it in your local GMA/Spesh books and google- Kinematics (Mostly applications of calculus, but it's probably worth checking out)
- Statistics (while most of the stuff in the spesh study design is different from further and general maths, it might be beneficial to check those out because there are some concepts that will carry over)
- Probability (also on the study design but it's probably pretty different to 1/2 Methods stuff, probably don't look into it too much unless you're bored

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