1 out of 3
This is a beautiful result involving a parabola and parallels.
1 out of 3
Evaluate these powers of 67. What do you notice? Can you convince someone what the answer would be to (a million sixes followed by a 7) squared?
1 out of 3
There are many different methods to solve this geometrical problem - how many can you find?
1 out of 3
Can you find a way to prove the trig identities using a diagram?
1 out of 3
Are these statistical statements sometimes, always or never true? Or it is impossible to say?
1 out of 3
Can you invert the logic to prove these statements?
1 out of 3
Can you work through these direct proofs, using our interactive proof sorters?
1 out of 3
Was it possible that this dangerous driving penalty was issued in error?
2 out of 3
Do you have enough information to work out the area of the shaded quadrilateral?
2 out of 3
If for any triangle ABC tan(A - B) + tan(B - C) + tan(C - A) = 0 what can you say about the triangle?
