Area of a Triangle

Area = 1/2 x 12 x 8 = 48 in2

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Area = 1/2 x 11 x 6 = 33 cm2

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Area = 1/2 x 4 x 6 = 12 cm2

Area of a Parallelogram

Area = Base x Height

.

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Area = 9 x 3 = 27 cm2

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Area = 15 x 5 = 75 cm2

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Area = 8 x 4 = 32 cm2

Area of a Rectangle

Area =  7 x 14 = 98 cm2 
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Area = 8 x 5 = 40 cm2 
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Square

Area = 5 x 5 = 25 cm2

Polygons

Polygon ---- A plane shape (two-dimensional) with 3 or more straight sides. It must be a closed figure

(Note: a circle is not a polygon because it has a curved side)

Quadrilateral Family

Add, Subtract, Multiply, and Divide Integers

Reflecting Points on a Coordinate Plane

Reflection over the x axis

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Reflection over the x axis

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Reflection over the y axis

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Reflection over the y-axis followed by the x-axis

Coordinate Grids

Label your x-axis (horizontal number line)

Label your y-axis (vertical number line)

Right five up two

Right a half down three

Zero, Zero = Origin

Left 4 and a half, down four and a half

I - (Positive, Positive)

II - (Negative, Positive)

III- (Negative, Negative)

IV- (Positive, Negative)

Coordinate Grids

N  (6,3)    Right 6, Up 3

M (5,1)   Right 5, Up 1

K (1,4)  Right 1, Up 4

L (4,6)  Right 4, Up 6

WALK before you can CLIMB or DIG

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Distance Between Two Points

A to B  = 7

C to D = 2

E to F = 3

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Polygons on A Grid

Polygon C --- Square, Perimeter = 8, Area = 4 

Polygon D --- Square, Perimeter = 8, Area = 4

Trapezoid --- Area = 16.5 

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These points will make a right triangle

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Absolute Value on a Number Line

 The absolute value of the red school is 3

 The absolute value of the gray house with black windows is 5

The absolute value of the gray house with white windows is 4

Fractions on the Number line