I got a B8 in the SC Internal results (got like low 90s As for Half Yearly and Yearly of Year 10 yet got a B8 for 10.3)
My topic test results for 2U + 3U combined so far:
Basic Algebra (Algebra, Surds, Quadratics, Quadratic Inequalities, Simultaneous Equations, etc.) - 39/39 - 100%
Functions + Plane Geometry - 42/45 - 93%
Looks good for now but watch, by the time I do a circle geometry test like you did, I'll get 30% or something (no joke).....
It's obviously because circle geometry is a hard topic... In fact, I hate geometry so bad... I'm just plain bad at it...
I reckon that if you did a topic test on something like basic algebra, functions or trigonometry (the typical schedule for Term 1 of Year 11) you'd get 85%+ easy...