1-A   2-A   3-D   4-D   5-D   6-B   7-D   8-C   9-D   10-C   11-C   12-B   13-A   14-A   15-C

16-C   17-B   18-C   19-D   20-C   21-C   22-A   23-C   24-D   25-A   26-D   27-A   28-C

29-A   30-A   31-C   32-B   3-A   34-A   35-D   36-B   37-C   38-A   39-C   40-C   41-B

42-A   43-B   44-D   45-C   46-B   47-D   48-A

If you’re not sure why a certain answer is correct, raise your hand and talk to me!

Things you need to memorize: SOHCAHTOA (sin=opp/hyp, cos=adj/hyp, tan=opp/adj)  Circle the angle you are referencing, label the sides with respect to that angle.

Pythagorean Theorem, Special Right Triangles (30-60-90)

Angles of a triangle add up to 180.  For other shapes, take the number of sides, subtract two, multiply by 180.  Exterior angles always add up to 360.

Area of a triangle: 1/2(base)(height)  Circles- Circumference: 2πr, πr^2

Only set things equal if they represent the same thing.  Use your eyes.  If two angles don’t look the same, and you don’t have a good reason why they should be the same, don’t make them equal!  Do they add up to a certain number?  90?  180?

A line segment of x combined with a line segment of 5 is x+5, not 5x!

To find the area of an unfamiliar shape, break it up into known triangles and rectangles.

For coordinate points, think hotel rooms: What floor number? What room number?  Are you subtracting a floor number from a room number? (you shouldn’t be…)

A counterexample satisfies the hypothesis or conditions of a statement, but doesn’t satisfy the conclusion.

SSS, SAS, AAS congruence (make sure you go in the right order, don’t skip over a side and an angle and then count the next side)

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