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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. 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.
x>y>0 and w>z>0
3.16
polygon
slope of a line joining two points

2. Is - as - was - has - cost
right triangle
the percent of increase
x<0
equals

3. What % of m is n
two solutions
hemisphere
medians of a triangle
(x/100)m= n

4. x - (n/100)x
angle bisector
n percent less than x
y-x
inscribed angle

5. (x+y)(x+y)= (x+y)²
a?n
x percent
any variable
x²+ 2xy+y²

6. 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.
right angle
a?n
right triangle
regular polygon properties

7. Integer is divisible by 2
properties of parallelograms
xy-xz
chord
if the last digit of the number is 0 -2 -4 -6 -8

8. Intersect at only one point - the point is the only solution to the pair of equations
consistent lines
all acute angles are equal and all obtuse angles are equal
v2/2 or .71
distributive axiom

9. x>z
it is also divisible by 2 and 3
isosceles
x>y and y>z
expression of an odd number

10. Product of two odd numbers is
obtuse angle
angle inscribed in semicircle
x>y and y>z
odd

11. All three sides and all three angles are equal
equilateral triangle
set
relation
1.4

12. All odd numbers end in the digits of
midpoint of a line segment joining 2 parts
central angle
quadratic equations
1 - 3 - 5 - 7 - 9

13. (amount of decrease/original amount) x 100
associative axiom of addition and multiplication
the percent of decrease
finding the union of sets
sphere

14. Between 180° and 360°
reflex angle
x + y
v3/2 or .87
the last three numbers are divisible by 8

15. Area= 1/2h(b1+b2) perimeter= b1+b2+c+d
right triangle
trapezoid
the sum of parts
xy + xz

16. Sin 30°
pythagorean theorem
1/2
xy< 0
chord

17. Area = ?r² circumference(perimeter)= 2?r
circle
diameter of circle
c x (john'S age)
x²-2xy+y²

18. Square of hypotenuse = c² = a²+b² length of hypotenuse = c= va²+vb²
two solutions
pythagorean theorem
x>y
0 - 2 - 4 - 6 - 8

19. y years from now
square
simultaneous equations
+y
x + y

20. ? if a side < b side - then
trapezoid
obtuse angle
y angle< x angle
x + y

21. Diagonals are perpendicular to each other and bisect the vertex angles 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 diagonal
properties of parallelograms
22/7 or 3.14
properties of a rhombus
x%

22. The point where the line crosses the x-axis - y will always = 0 in this case
1/2
x intercept
determining if a number is prime
the sum of parts

23. Is drawn from the vertices perpendicular to the opposite sides. The lengths of these lines are useful in calculating the area of the trinagle since the area of the triangle is 1/2bh and the height and the _____are the same.
times
if the last digit of the number is 0 -2 -4 -6 -8
altitude of a triangle
x + y

24. 1-1-1 (60-60-60)
v(x2-x1)²+ (y2-y1)²
equilateral triangle
1/2
isosceles

25. C²= a²+b² and angle x and y are equal to 90°
properties of a rhombus
right triangle
no solutions
1/2

26. If ?B > ?A - then
parallelogram
angle bisector
then side b > side a
similar triangles

27. Write down every member in one or both of the sets - the union of two sets is a new set. the union of set A and B is written as A?B
regular polygon properties
1.7
simultaneous equations in 2 unknowns
finding the union of sets

28. In transversals
all acute angles are equal and all obtuse angles are equal
equilateral triangle
triangle or straight line
range of a relation

29. A<x and x<b
a<x<b
x>y and y>z
the last three numbers are divisible by 8
diameter

30. 3(4+1)= 3 x 4 + 3 x 1
distributive axiom
x + y
1 - 3 - 5 - 7 - 9
v(x2-x1)²+ (y2-y1)²

31. Volume= e(edge)³ surface area= 6e²
1 - 3 - 5 - 7 - 9
the percent of increase
cube
implies

32. The percent decrease from x to y ( y<x)
(y-x/x)100
(x-y/x)100
even
the last two digits of the number make a number that is divisible by 4

33. Product of an even number and any other number is
itself
x>y and w>z
even
±vx

34. Sin 45°
set
chord
regular polygon properties
v2/2 or .71

35. x +z > y+z
x>y
properties of parallelograms
x + y
isosceles

36. The length of a segment whose endpoints are (x1 -y1) and (x2 -y2)
v(x2-x1)²+ (y2-y1)²
rectangular solid
angle a and angle b = angle d
similar triangles

37. 5-12-13
simultaneous equations
negative
angle
right triangle

38. 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.
properties of parallelograms
hexagon
chord
supplementary angles

39. Angle whose sides are two chords. The vertex of the angles lies on the circumference of the circle. The number of degrees of the angle is equal to 1/2 the intercepted arc
opposite the greatest side
inscribed angle
perpendicular
right angle

40. Angles directly across each other are equal
vertical angles
hemisphere
xy< 0
a?n

41. Of
parallel
times
chord
the last two digits of the number make a number that is divisible by 4

42. The sume of x and y
x + y
trapezoid
x - y
slope of a line joining two points

43. 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
right triangle
circle
null set
properties of parallelograms

44. 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
180 degrees
two solutions
b+d>c+e
approx sums

45. x/100
x percent
360 degrees
polygon
any variable

46. Side a +side b of a ? is
cylinder
commutative axiom of addition and multiplication
greater than c
the last digit is 0

47. x(y+z)
0 - 2 - 4 - 6 - 8
equal angles
xy + xz
x - y

48. 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.
hexagon
angle bisector
null set
right triangle

49. 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)
right triangle
equal
probability
domain of a relation

50. A/A¹ = B/B¹= C/C¹
central angle
midpoint of a line segment joining 2 parts
similar triangles
3.16