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REASONING Are the polygons alinays, sometimes, or never similart
14. Two isosceles triangles coltons
18. Two equilateral triangles - lemy
16. A right triangle and an
17. A scalene triangle and an
isosceles triangle
isosceles triangle
SIMILAR TRIANGLES The black triangles are similar. Identify the type of special
segment shown In blue, and find the value of the variable.
19
X
EXAMPLE S
for Exs. 21-22
USING SCALE FACTOR Triangles NPQ and RST are similar. The side lengths
of ANPQ are 6 Inches, 8 inches, and 10 inches, and the length of an altitude
Is 4.8 inches. The shortest side of ARST Is 8 Inches long.
21. Find the lengths of the other two sides of ARST.
(RT =10.5) ( ST = 13. 3 )
USING SIMILAR TRIANGLES In the diagram, AABC ~ ADEF.
23. Find the scale factor of AABC
to A DEF.
24. Find the unknown side lengths
in both triangles.
22
19%
X
10.6
3132
36
PROBLEM SOLVING
TENNIS In table tennis, the table is a rectangle
9 feet long and 5 feet wide. A tennis court is a
rectangle 78 feet long and 36 feet wide. Are the
two surfaces similar? Explain. If so, find the
O the factor Send a chatthe table....

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- Fall '13
- Orna