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CRCT REVIEW

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obtuse triangle. A triangle that has one obtuse angle. Example: ... Obtuse Angle. An OBTUSE ANGLE is one whose measure is GREATER THAN 90 AND LESS THAN 180 ... – PowerPoint PPT presentation

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Title: CRCT REVIEW


1
CRCT REVIEW
  • MATH
  • You are going to do great!!!

2
PLACE VALUE
3
ORDERED PAIR
  • (1,2)
  • A pair of numbers used
  • to locate a point on a
  • coordinate plane
  • the first number tells
  • how far to move
  • horizontally
  • and the second number
  • tells how far
  • to move vertically

4
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5
relation
  • A set of ordered pairs

Example (5,1)       (10,2)       (15,3)      
(20,4)       (25,5)
6
GREATEST COMMON FACTOR
  • The greatest factor that two or more numbers have
    in common Example 18 1, 2, 3, 6, 9, 18
    30 1, 2, 3, 5, 6, 10, 15, 30 6 is the GCF of
    18 and 30.

7
MULTIPLES
  • multiple
  • The product of a given whole number and another
    whole number

Example                                 
8
percent
  • The ratio of a number to 100 percent means "per
    hundred

9
measure of central tendency
  • A measure used to describe data the mean,
    median, and mode are measures of central
    tendency.

10
mean
  • The number found by dividing the sum of a set of
    numbers by the number of addends see also
    average Example 74, 91, 63, 92, 85

11
mode
  • The numbers or items that occur most often in a
    set of data Example The mode of 1, 3, 4,
    4, and 6 is 4.

12
median
  • The middle number or the average of the two
    middle numbers in an ordered set of data
    Example The median of 1, 3, 4, 6, and 7 is
    4.

13
range
  • The difference between the greatest and least
    numbers in a set of data Example The
    greatest temperature is 83F. The least
    temperature is 80F. Since 83 - 80 3, the range
    is 3F.

14
number line
  • A line with equally spaced tick marks named by
    numbers (POSITIVE AND NEGATIVE INTEGERS)
  • Example

15
A number written as the product of all its prime
factors
16
prime number
  • A whole number greater than 1 whose only factors
    are 1 and itself
  • Example 1,2, 3, 5,
  • Not prime 4, 8, 12,

17
composite number
  • A whole number that has more than two factors
  • Example 21 1, 3, 7, 21
  • Example 4 1, 2, 4

18
parallel lines
  • Lines in a plane that never intersect

19
perpendicular lines
  • Two lines that intersect to form four right
    angles

20
congruent Having the same size and shape
Example                                The
triangles are congruent.
21
line of symmetry
  • A line that divides a figure into two congruent
    parts

22
similar figures Figures with the same shape but
not necessarily the same size
                                                  
   
23

24
FACE
  • A polygon that is a flat surface of a solid
    figure

25
Right Triangle
  • A RIGHT triangle has ONE right angle.

26
obtuse triangle A triangle that has one obtuse
angle Example                               
                        
27
Acute Triangle
  • An ACUTE triangle has THREE acute angles.

28
  • The ratio of the circumference of a circle to its
    diameter

29
circumference The distance around a circle
Example                       
30
Diameters -
  • A DIAMETER of a circle is a chord that contains
    the center of the circle.  Diameter CV, diameter
    DT, diameter GH, diameter EU, etc.....

31
Radius
  • A line segment with
  • one endpoint
  • at the center
  • of a circle
  • and the other
  • endpoint
  • on the circle

32
  • acute angle
  • An angle that has a measure less than a right
    angle (less than 90) Example

                            
33
Straight Angle
  • A STRAIGHT ANGLE is one whose measure is EXACTLY
    180 DEGREES.  A straight angle is made up of two
    opposite rays.   Another important fact is that a
    straight angle forms a straight line. 

34
Obtuse Angle
  • An OBTUSE ANGLE is one whose measure is GREATER
    THAN 90 AND LESS THAN 180 DEGREES.

35
Right Angle
  • A RIGHT ANGLE is an angle whose measure is
    EXACTLY 90 DEGRRES. Right angles are denoted by a
    small square in its interior.

36
VERTEX -
  • The common point for both rays is called the
    Vertex. 

37
Identify the Triangles
  • Triangles are also classified according to their
    length.
  • Scalene Triangle- no congruent sides
  • Isosceles Triangle- two congruent sides
  • Equilateral Triangle- three congruent sides

38
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39
area The number of square units needed to cover
a surface Example                        
The area is 9 square units.
40
Perimeter
  • The distance
  • around a figure
  • 2 cm 3 cm 3 cm
  • 8 cm The perimeter of this figure is 8
    centimeters

41
VOLUME
  • The measure of the amount of space a solid figure
    occupies

The volume of this figure is 24 cubic units
42
PRISM
  • A solid figure that has two congruent,
    polygon-shaped bases, and other faces that are
    all rectangles

43
pyramid
  • A solid figure with a polygon base and all other
    faces triangles that meet at a common vertex

44
Associative Property
  • The property that states that the way addends are
    grouped or factors are grouped does not change
    the sum or the product

12 (5 9) (12 5) 9 (9 x 8) x 3 9 x
(8 x 3)
45
Commutative Property
  • The property that states that when the order of
    addends or factors is changed, the sum or product
    is the same

9 4 4 9 6 x 3 3 x 6
46
greater than (gt)
A symbol used to compare two numbers, with the
greater number given first Example 8 gt 6 8
is greater than 6.
47
FRACTION
  • A number that names a part of a whole or a part
    of a group

48
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