Math Is Fun Forum

I would say 'indeterminate' is a little more accurate than 'undefined'. Undefined means 1/0 or 2/0, where the answer is just that, but indeterminate means there is more than one answer.

I'll contribute one:

"Sir, we can't see what you're writing, could you please write bigger?"

I just finished my Facts, Skills and Applications exam too , it was incredibly easy, hope the next one won't be! None of the questions were 'difficult', they just required checking and double-checking, so trickiest question was a simplifying surds one.

Here's a good page on irrational numbers:

http://www.mathsisfun.com/irrational-numbers.html

This is how I did the problem:
Let the side lengths of the equilateral triangle be x.

Given: AD = AB = BD = x

Construct: Angle bisector of A
                Line from E to D

Consider ΔADE and ΔACD.
              /_ADE = /_ACD (right angles)
              /_DAE = /_CAD (common)
              ΔADE ~ ΔACD (AA)

Hence,

Also,

Hence,

Hence,

That's 3247.6m²

Am i right?

Congruency:
SAS (Two sides and included angle, Side angle side)
ASA (Two angles and a side, Angle side Angle)
SSS (3 side lengths equal, side side side)
RHS (right angle, hypotenuse, side)

Similarity:
PAP (Proportion angle Proportion)
PPP (Proportion proportion proportion)
AAA (often shortened to AA, Angle angle angle)

I don't believe it's possible to do 178 in 10 seconds !

How about 'the absolute value of negative thirty-seven'? Ridiculous!

Thanks mathsy!