Week 16 and 17

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Week 16 and 17
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6.6 Special Quadrilaterals
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Quad-Tree-Laterals
I am a square. I must also be a
I am a quadrilateral with two consecutive
congruent sides, I must be a
I am a quadrilateral with at least two
consecutive congruent sides, I MAY be a
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Make a table with the following shapes as the
heading Trapezoid Isosceles
Trapezoid Kite Parallelogram Rectangle Rhombus
Square
All angles are congruent
All sides congruent
Opposite angles congruent
Only one pair of parallel sides
Both pairs of opposite sides congruent
Diagonals congruent
Diagonals are perpendicular
Diagonals Bisect Each Other
Both pairs of opposite sides
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6.7 Areas of Triangles and Quadrilaterals
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Postulate The area of a square is the square of
the length of its side ? A s2
s
Area congruence Postulate ? If two figures are
congruent, they have the same area.
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Area Addition Postulate ? The area of a region is
the sum of the areas of the non overlapping part.
Just means you can cut up the parts and add them
together.
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In a parallelogram, a side can be considered the
base. The line perpendicular to the base and
going to the other side is the altitude. The
length of the altitude is called the height.
(Altitude ? segment, height ? number)
a
a
b
b
Area of a rectangle equals the product of the
base and height. (A bh)
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22
x
x
22
x
5
y
y
10
10
10
4
10
10
15
4
8
10
5
Write bottom two
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The sides of a rectangle are x and x 14. The
area is 120. Find the value of x.
x 14
x
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Area is 40 ft2. Find h
Area is 80 ft2. Find x
10
x
h
x
16
12
12
17
8
8
12
6
13
4
5
11
4
14
6
14
14
Find Area
Write bottom two
15
Find Area
Write bottom two