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GRE Math Strategies

Subjects : gre, math

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Less than 90°
null set
acute angle
w>0 and x>y
v2/2 or .71

2. Wx<wy
-y
even
w<0 and x>y
similar triangles

3. If two lines are parallel - the slope of one is
equal to the slope of the other
expression of an even number
360 degrees
1.7

4. 1/2bh
area of a triangle
positive
the sum of its digits is divisible by 9
null set

5. ? if a side < b side - then
y angle< x angle
pythagorean theorem
rectangular solid
trapezoid

6. The measure of an interior angle is
equal to the sum of the measures of the remote exterior angles
x>y and y>z
right angle
combinations

7. A subset of a set is
xy>0
parallelogram
implies
a set

8. 180°
negative
isosceles triangle
x is less than y
triangle or straight line

9. Then their intersection is the null or empty set - written as Ø
1
distributive axiom
a set
if two sets have no elements in common

10. M=number of favorable ways n= total number of ways (two events occurring is the prob of the first times the prob of the second)
probability
1.7
n= mx/100
expression of an even number

11. Product of an even number and any other number is
x>y>0 and w>z>0
even
negative reciprocal of the other
x-y/xy

12. 5-12-13
right triangle
Axioms
angle a and angle b = angle d
triangle or straight line

13. ?if y angle< x angle - then
y-x
perpendicular bisectors
a side< b side
equilateral triangle

14. V2/2- v2/2 - 1 (90-45-45)
x - y
quadratic equations
isosceles triangle
xy>0

15. x(y+z)
xy + xz
semicircle
area of a triangle
any variable

16. 7-24-25
x>y and y>z
right triangle
always positive or zero
1 - 3 - 5 - 7 - 9

17. ?
then side b > side a
x>y
1 - 3 - 5 - 7 - 9
is a subset of

18. Integer is divisible by 2
right triangle
if the last digit of the number is 0 -2 -4 -6 -8
approx sums
negative reciprocal of the other

19. Pairs of opposite angles formed by the intersection of two straight lines. always equal to each other
a
vertical angles
triangle
opposite the greatest side

20. 1. determine a rough approximation of the square root of the number. 2. divide the number by all the primes that are less than the approx square root. If the number is not divisible by ANY of the these primes - then it is prime. If it IS divisible -
regular polygon properties
-y
determining if a number is prime
approx products

21. If two lines are perpendicular - the slope of one is the
right triangle
angle a and angle b = angle d
opposite the greatest side
negative reciprocal of the other

22. (3+5) +6= 3+ (5+6) and (3x5)6= 3(5x6)
associative axiom of addition and multiplication
right triangle
x<0 and z=x+y
equal

23. x > y or y< x
a side< b side
the last three numbers are divisible by 8
v3/2 or .87
x is greater than y

24. Area= l x w perimeter = (2l)(2w)
rectangle
isosceles triangle
or
a

25. ?
22/7 or 3.14
itself
permutations
or

26. B²-4ac = 0 there is
one solution
xy + xz
0 - 2 - 4 - 6 - 8
right triangle

27. The angles opposite to sides that are equal in length have
x²+ 2xy+y²
equal angles
xy + xz
the perpendicular distance

28. V10
no solutions
3.16
odd
central angle

29. If under the operation - any two members of the set constitute an element of the set ( * the product of the elements multiplied by themselves must also be an element of the set*)
right triangle
a<x<b
closed set
x-y/xy

30. x + (n/100)x
radius
w<0 and x>y
n percent greater than x
perpendicular

31. 5+3= 3+5 and 5 x 3= 3 x 5
or
commutative axiom of addition and multiplication
angle a and angle b = angle d
opposite the greatest side

32. ?
x + y
perpendicular
the last two digits of the number make a number that is divisible by 4
the perpendicular distance

33. All sides are equal and all of whose angles are equal. 1. can be inscribed in a circle and can be circumscribed about another circle. 2. each angle is equal to the sum of the angles divided by the number of sides 180(n-2)°/n.
x>y
consistent lines
regular polygon properties
set

34. M= y2-y1/x2-x1
slope of a line joining two points
circle
v3/2 or .87
n percent less than x

35. The length of a segment whose endpoints are (x1 -y1) and (x2 -y2)
a relation is a function
v(x2-x1)²+ (y2-y1)²
xy + xz
simultaneous equations

36. Square of hypotenuse = c² = a²+b² length of hypotenuse = c= va²+vb²
n percent greater than x
pythagorean theorem
x + y
v2/2 or .71

37. All angles are right angles and diagonals are equal 1.each pair of opposite sides are equal 2. the diagonals bisect eachother 3. the opposite angles are equal 4. one diagonal divides it into two congruent triangles and two diagonals divides it into
the last two digits of the number make a number that is divisible by 4
implies
negative reciprocal of the other
properties of a rectangle

38. Area= 1/2bh perimeter= a + b+ c hypotenuse= c²= b²+a²
acute angle
right triangle
x>y
x²+ 2xy+y²

39. The sum of the interior angles is
and
regular polygon properties
180 degrees
angle bisector

40. Angle whose sides are two radii of the circle. The vertex of this angle is the center of the circle. The number of degrees is equal to the amount of arc length that the radd intercept.
n= mx/100
central angle
3.16
perpendicular bisectors

41. B>c+ d>e
x%
b+d>c+e
is a subset of
commutative axiom of addition and multiplication

42. If b²-4ac > 0 there are
the perpendicular distance
right triangle
two solutions
acute angle

43. 9-40-41
or
find the intersection of two sets
set
right triangle

44. All three sides and all three angles are equal
equal to the sum of the measures of the remote exterior angles
(x-y/x)100
x + y
equilateral triangle

45. Diagonal= sv2
diagonal of a square
properties of parallelograms
cube
the perpendicular distance

46. Every set is a subset of
itself
x²+ 2xy+y²
rectangle
inscribed angle

47. x>0 and y>0 or x<0 and y<0
1/2
xy>0
Axioms
triangle

48. A chord through the center of the circle
tangent
v2/2 or .71
xy< 0
diameter

49. 1. square all choices given 2. select the closes choice that is too large and the one that is too small. 3. find the average of the two choices (not of the squares) 4. square the average - if it is greater than the original number - choose the lower
x+y/xy
+y
approx square roots
range of a relation

50. (x+y)(x+y)= (x+y)²
a?n
x²-2xy+y²
perpendicular
x²+ 2xy+y²