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26. Explore:
Every
}
1
8
}
inch represents 1 foot. The
dimensions of the tennis court are 36 feet by 78
feet.
Plan:
Create a proportion relating each
measurement to the scale to find the
measurements in inches. Then make a scale
drawing.
Solve:
5
¬
}
3
x
6
}
}
1
8
}
(36)
5
¬
x
4.5
5
¬
x
The width of the court should be 4.5 inches in the
drawing.
5
}
1
8
}
(78)
5
¬
y
9.75
5
¬
y
The length of the court should be 9.75 inches in
the drawing.
Examine:
The scale is
}
1
8
}
:1.The dimensions in
the drawing are reasonable.
27.
Always; the corresponding angles are congruent
and the ratios of the measures of the
corresponding sides are all 1.
28.
Always; all angles are right angles and so all are
congruent, and the ratios of the measures of the
corresponding sides are all the same.
29.
Never; the number of angles and sides of the
figures must be the same for the figures to be
compared.
30.
sometimes; true when corresponding angles are
congruent and ratios of measures of
corresponding sides are equal, false when one of
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 Fall '10
 Dr.Zhan
 Calculus, PreCalculus

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