Re: 2012 Year 9 &10 Mathematics Marathon
Haha, sorry about that. It's not the sides (i indicated that they're parallel). The 2 dots suggest the two angles are equal in the diagram.
Re: 2012 Year 9 &10 Mathematics Marathon
If only I remembered to add statistics. :(
Edit: In addition, I reckon 1hr 5 mins was slightly generous. I reckon it could be done properly in about 50 minutes.
Re: 2012 Year 9 &10 Mathematics Marathon
I didn't actually really make my test that hard. I followed the format of tests that my school traditionally keeps. Meant to be easy and designed to be friendly until the last few questions. It's nowhere near as insane as carrot's papers.
Re: 2012 Year 9 &10 Mathematics Marathon
Also guys, for question 1h, just sketch the equations onto the number plane - there's actually three intercept points.