valkener Posted February 19, 2013 Share Posted February 19, 2013 Hey, Do I need to know these rules for special triangles? 90-45-45 Sides Ratio Isosceles: x : x : x 90-60-30 Sides Ratio x : x : 2 x Link to comment Share on other sites More sharing options...
iowaguy Posted February 19, 2013 Share Posted February 19, 2013 Yes, absolutely! You also need to know the 3,4,5 right triangle and the 5, 12, 13 right triangle. Link to comment Share on other sites More sharing options...
Brent@GreenlightGRE Posted February 19, 2013 Share Posted February 19, 2013 I'll also add that the formula for the area of an equilateral triangle sometimes comes in handy. If the length of each side is L, then the area is: sqrt3(L^2)/4 Cheers, Brent kdavid 1 Link to comment Share on other sites More sharing options...
alf10087 Posted February 19, 2013 Share Posted February 19, 2013 Yes. Learn them up to the point that they are basically automatic to you. Link to comment Share on other sites More sharing options...
Queen of Kale Posted February 20, 2013 Share Posted February 20, 2013 I think these triangles, plus the basic probability (combinations and permutations), will get you through at least half the problems and almost all of the difficult ones. Link to comment Share on other sites More sharing options...
Brent@GreenlightGRE Posted February 20, 2013 Share Posted February 20, 2013 I think these triangles, plus the basic probability (combinations and permutations), will get you through at least half the problems and almost all of the difficult ones. I think "half" might be a bit of a stretch The test-makers are more interested in evaluating one's competency regarding real-life topics such as statistics, percent, and number sense. Cheers, Brent kdavid 1 Link to comment Share on other sites More sharing options...
soporific Posted February 23, 2013 Share Posted February 23, 2013 I think "half" might be a bit of a stretch The test-makers are more interested in evaluating one's competency regarding real-life topics such as statistics, percent, and number sense. Cheers, Brent I was lucky - I'd enrolled in Stats 2.1x on edx to upgrade my statistics literacy before doing research this summer. I took the GRE today without much preparation, and the 3 lectures (the online course just started) helped me tremendously with means, medians, etc.! Link to comment Share on other sites More sharing options...
Guest ||| Posted February 23, 2013 Share Posted February 23, 2013 Yes, there are one or two questions on triangles on most exams it would seem. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now