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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. 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.
all acute angles are equal and all obtuse angles are equal
regular polygon properties
parallel
radius

2. V2/2- v2/2 - 1 (90-45-45)
y angle< x angle
Axioms
area of a triangle
isosceles triangle

3. Area= s² perimeter= 4s
b is the y-intercept
parallelogram
inverse of a relation
square

4. z>y
-y
the last three numbers are divisible by 8
x<0 and z=x+y
a relation is a function

5. Volume= 4/3?r² surface area= 4?r²
-y
approx products
acute angle
sphere

6. ? if a side < b side - then
circle
y angle< x angle
diagonal of a square
probability

7. A¹
x<0
a
angle a and angle b = angle d
radius of a circle

8. N= number of objects (order matters!!!) k= rate at a time nPk= n!/(n-k)! (remember to cancel common numbers)
permutations
standard deviation
even
xy>0

9. x= -b + vb²-4ac/2a and x = -b - vb²-4ac/2a
polygon
xy>0
right triangle
quadratic equations

10. x - (n/100)x
the sum of its digits is divisible by 3
inconsistent lines
n percent less than x
the last digit is 0

11. 8-15-17
odd
x + y
right triangle
diagonal of a square

12. The percent increase from x to y (y>x)
(y-x/x)100
consistent lines
solution set
regular polygon properties

13. Sin 60°
equal angles
the third side
v3/2 or .87
right triangle

14. Angles directly across each other are equal
find the intersection of two sets
right triangle
vertical angles
combinations

15. 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
approx square roots
right triangle
y intercept
hemisphere

16. A pair of equations in two unknowns (each is graphed seperately and each is represented by a straight line)
simultaneous equations
percent
x>y and w>z
even

17. If an equation can be put into the form y= mx +b - then
x²-y²
b is the y-intercept
22/7 or 3.14
set

18. The whole equals
c x (john'S age)
inconsistent lines
the sum of parts
sphere

19. x < y or y> x
a side< b side
x is less than y
standard deviation
isosceles

20. Less than 90°
acute angle
(y-x/x)100
equal to the sum of the measures of the remote exterior angles
v3/2 or .87

21. A closed plane whose sides are straight lines. The sum of the angles is equal to 180(n-2) - where n is the number of sides.
polygon
right triangle
the sum of its digits is divisible by 9
straight angle

22. One angle is equal 90° and the other two angles are equal to the sum of 90°
right triangle
x<0
properties of a square
the percent of decrease

23. Pairs of opposite angles formed by the intersection of two straight lines. always equal to each other
x - y
perpendicular
(x-y/x)100
vertical angles

24. (amount of increase/original amount) x 100
the percent of increase
x-y/xy
cube
times

25. The distance from the center of the circle
vertical angles
radius
right angle
right triangle

26. The measure of an interior angle is
x>y
equal to the sum of the measures of the remote exterior angles
xy-xz
y-x

27. 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 two pairs of congruent triangles
a relation is a function
properties of parallelograms
inscribed angle
xy>0

28. 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
no solutions
coinciding lines
equilateral triangle
right triangle

29. The sum of any two sides of a triangle is greater than
the last two digits of the number make a number that is divisible by 4
x>y and y>z
isosceles triangle
the third side

30. 1/y-1/x x -y ? 0
x-y/xy
simultaneous equations in 2 unknowns
xy< 0
b+d>c+e

31. The product of an odd number of negative numbers is
negative
isosceles triangle
x is greater than y
x<0

32. If the each element of the domain occurs only once as a FIRST component
negative
a relation is a function
is a subset of
always positive or zero

33. 180°
straight angle
equilateral triangle
equal
1.4

34. R²
average
the last digit is either 0 or 5
if the last digit of the number is 0 -2 -4 -6 -8
diameter of circle

35. Angles that equal 180 degrees
regular polygon properties
or
3.16
supplementary angles

36. 1. round each number being added to one more place than it is being asked. 2. add the rounded numbers. 3. round off the sum to the desired number of places
right triangle
the sum of its digits is divisible by 9
approx sums
1.7

37. Is the set of the first components of the ordered pairs.
perpendicular
domain of a relation
a side< b side
approx square roots

38. All even numbers end in the digits of
0 - 2 - 4 - 6 - 8
find the intersection of two sets
radius of a circle
vertical angles

39. ? if a side is equal to b side then - the opposite corresponding angles are
right triangle
closed set
equal
the sum of its digits is divisible by 9

40. The point where the line crosses the x-axis - y will always = 0 in this case
x intercept
chord
x and y
x-y/xy

41. Write down every member that the two sets have in common. The intersection of the sets A and B is a set written AnB
find the intersection of two sets
1.7
negative
x is less than y

42. Any integer is divisible by 9 - if
right triangle
the sum of its digits is divisible by 9
square
xy

43. 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)
xy>0
probability
right triangle
cylinder

44. Sum of two even numbers is
even
circle
x²-2xy+y²
right triangle

45. (x1+ x2/2) - (y1+y2/2) Each coordinate of the midpoint is equal to the average of the corresponding cordinates of the endpoints
right triangle
properties of parallelograms
pythagorean theorem
midpoint of a line segment joining 2 parts

46. Ax= by + C
regular polygon properties
simultaneous equations in 2 unknowns
then side b > side a
hemisphere

47. A°
reflex angle
n percent greater than x
(y-x/x)100
1

48. Sum of an odd and an even number is
all acute angles are equal and all obtuse angles are equal
odd
closed set
the last two digits of the number make a number that is divisible by 4

49. 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
implies
n percent less than x
one solution
properties of a rectangle

50. Two tangents to a circle from the same point outside of the circle are always
set
expression of an odd number
x is greater than y
equal