INTRO TO SECTION 72

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INTRO TO SECTION 7-2
2
legs
hypotenuse
c
right
3
obtuse
obtuse
acute
acute
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A Pythagorean triple is a set of nonzero whole
numbers a, b, and c that satisfy the equation
Here are some TRIPLES to copy down 3,4,5
5,12,13 7,24,25 8,15,17 9,40,41 Note if
you double 3,4,5 you get 6,8,10. and if you
triple 3,4,5 you get 9,12,15. These belong to the
3,4,5 family ?
5
20
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congruent
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(Use Pythagorean theorem to find the missing
side, then use a1/2bh) EXACT ANSWERS
ONLY!!
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2
x
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Solve this one by placing the given numbers into
the Pythagorean theorem (the C always gets the
largest number!)
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First place the given numbers into the
Pythagorean theorem (the C still gets the
largest number!)
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Check Understanding 4
Find the exact area of this triangle
Hint the altitude to the base of an isosceles
triangle bisects that base
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15
10
15
Find the exact area of this triangle
Now use Pythagorean theorem to find the length of
the altitude(X)
Heres your diagram
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15
X
5
5
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Now its time to find the area of the triangle!
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Find the exact area of this triangle
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15
5
5
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