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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. Diagonals divide into 6 equilateral triangles - the sides are equal to the sides of the ________. if inscribed in a circle - the length of each side is equal to the length of the radius of the circle.
x + y
properties of a rhombus
hexagon
itself

2. ? if a side is equal to b side then - the opposite corresponding angles are
diameter of circle
a relation is a function
x>y>0 and w>z>0
equal

3. x older than y
no solutions
set
equal to the sum of the measures of the remote exterior angles
x + y

4. ? if a side < b side - then
angle a and angle b = angle d
isosceles triangle
never divide by zero
y angle< x angle

5. 1/2bh
properties of parallelograms
right triangle
the sum of parts
area of a triangle

6. N= number of objects (order matters!!!) k= rate at a time nPk= n!/(n-k)! (remember to cancel common numbers)
radius
permutations
range of a relation
belongs to

7. 3(4+1)= 3 x 4 + 3 x 1
+y
distributive axiom
x-y
the third side

8. 5-12-13
similar triangles
x - y
itself
right triangle

9. Sum of an odd and an even number is
the sum of parts
odd
n percent less than x
x<0

10. x>z
x intercept
any variable
x>y and y>z
polygon

11. Sum of two even numbers is
when finding a solution set
vertical angles
w>0 and x>y
even

12. (x-y)(x-y) = (x-y)²
even
x²-2xy+y²
all acute angles are equal and all obtuse angles are equal
semicircle

13. The lines that divide each angle of the triangle into two equal parts. these lines meet in a point that is the center of a circle inscribed in the triangle.
vertical angles
1 - 3 - 5 - 7 - 9
even
angle bisector

14. 7-24-25
1.7
circle
right triangle
parallelogram

15. Set of solutions to an equation
x is less than y
square
solution set
x<0 and z=x+y

16. Two tangents to a circle from the same point outside of the circle are always
find the intersection of two sets
equal
chord
even

17. x - (n/100)x
y-x
determining if a number is prime
greater than c
n percent less than x

18. 1. subtract each number from the average of the numbers 2. square the result of each of the numbers 3. add all those results and then divide by how many numbers you originally had. 4. take the square root of that result
standard deviation
x<0
x²-2xy+y²
range of a relation

19. The length of a segment whose endpoints are (x1 -y1) and (x2 -y2)
v(x2-x1)²+ (y2-y1)²
no solutions
negative reciprocal of the other
right triangle

20. 1. solve the equation or inequality 2. use ONLY the solutions which satisfy the condition required - the set of all x such that x is greater than or equal to 10 R= {x: x=10}
n= mx/100
1
when finding a solution set
the perpendicular distance

21. Sin 60°
regular polygon properties
the last digit is either 0 or 5
v3/2 or .87
triangle

22. y years ago
right triangle
-y
x and y
x>y and y>z

23. Diagonal= sv2
properties of parallelograms
right triangle
diameter
diagonal of a square

24. Is always a right angle.
y intercept
probability
angle inscribed in semicircle
average

25. A+b=c+ d=d
x+y/xy
x>y and y>z
a+b+d=c+d
sphere

26. Area= 1/4s² v3 perimeter= 3s altitude= 1/2s v3
two solutions
even
all acute angles are equal and all obtuse angles are equal
equilateral triangle

27. Of
the sum of its digits is divisible by 9
right triangle
and
times

28. (amount of decrease/original amount) x 100
a set
x-y/xy
the percent of decrease
x%

29. Parallel and never intersect - they have no solution at all - they are parallel with the same slope
22/7 or 3.14
inconsistent lines
3.16
central angle

30. The product of an even number of negative numbers is
positive
determining if a number is prime
a?n
cube

31. x +z > y+z
Axioms
right triangle
one solution
x>y

32. If b²-4ac < 0 - there are
diagonal of a square
perpendicular
xy>0
no solutions

33. ?
a set
simultaneous equations in 2 unknowns
implies
semicircle

34. The difference between x and y
perpendicular bisectors
x - y
x<0 and z=x+y
percent

35. x more than y
chord
x + y
vertical angles
right triangle

36. In transversals
all acute angles are equal and all obtuse angles are equal
x-y
parallel
similar triangles

37. The distance from the center of the circle
circle
right triangle
perpendicular
radius

38. The case where the two equations are equivalent (just two different forms of the same mathematical relation). Any point that satisfies either of the equations - automatically satisfies both
x>y and y>z
x intercept
diagonal of a square
coinciding lines

39. Area= 1/2?r2 length= 1/2?d= ?r perimeter= d(1/2? +1)
even
semicircle
positive
-y

40. A¹
if two sets have no elements in common
vertical angles
x²+ 2xy+y²
a

41. 1/x + 1/y x -y ? 0
x+y/xy
percent
opposite the greatest side
approx products

42. ?
perpendicular
x>y
right triangle
x>y and w>z

43. If an equation can be put into the form y= mx +b - then
right triangle
implies
coinciding lines
b is the y-intercept

44. If two lines are parallel - the slope of one is
the sum of its digits is divisible by 9
w<0 and x>y
equal to the slope of the other
hexagon

45. Every set is a subset of
itself
set
right triangle
the sum of its digits is divisible by 3

46. A subset of a set is
even
a set
properties of a rhombus
right angle

47. x + y
x<0
x and y
xy>0
xy< 0

48. Integer is divisible by 2
greater than c
if the last digit of the number is 0 -2 -4 -6 -8
equilateral triangle
w>0 and x>y

49. Volume= 2/3?r² surface area= 2?r² (w/o bases) or 3?r² (with bases)
relation
hemisphere
medians of a triangle
the last two digits of the number make a number that is divisible by 4

50. V10
the last digit is either 0 or 5
vertical angles
parallelogram
3.16