Test 2 Section 8 - # 14 (page )

Oof, tough question, but you can make it easier by marking what you know on the diagram (forgive my awkward mouse-drawn diagram).  All you know is that AB > AC, but it's definitely an isosceles triangle.  What do you know about isosceles triangles?  The big thing that's always true about them is the angles across from the equal sides are also equal.  SO, the only thing we know for sure is that the angles across from our unequal sides have to be UNequal.  y is acrosss from AC, and z is across from AB, so y cannot equal z.  Our answer is (E).

Test 2 Section 8 - #12 (page 485)

This is a question that makes you think outside the box a little. The positions of the rectangles as vertical and horizontal in the circle are totally arbitrary. Because a circle is perfectly round, those rectangles could fit at any angle -- literally any -- so that's why there are 'More than four'; there are infinite possibilities.

Test 2 Section 8 - #16 (page 486)

The key here is to plug in a few different numbers and look for a pattern. Start with n=2. If you have a 2x2 square, all 4 of the squares would lie along the boundary, so k=4. Now try a new number. If n=3, you'd have a 3x3 gameboard and only 8 of the squares would be along the boundary (the other square is smack in the middle), so k=8. Try one more number to detect a pattern. When n=4, you have a 4x4 gameboard, and 12 squares make up the border (the other 4 are in the middle), so k=12. So far we have k=4, k=8, and k=12... see the pattern? Multiples of 4. The only answer that's a multiple of 4 is (E).