60.
s
¬
2
4
s
¬
4(2)
¬
8
61.
3,
w
¬
8,
s
2
w
ws
¬
3
8
8
2
¬
24
16 or 40
62.
3,
w
¬
8,
s
2
s
(
w
)
¬
2(3
8)
¬
2(11) or 22
Page 44 Geometry Activity: Constructing
Perpendiculars
1.
See students’ work.
2.
The first step of the construction locates two
points on the line. Then the process is very similar
to the construction through a point on a line.
Polygons
Page 48
Check for Understanding
1.
A regular decagon has 10 congruent sides,
so divide the perimeter by 10.
2.
Saul; Tiki’s figure is not a polygon.
3.
P
3
s
4.
Sample answer: Some of the lines containing the
sides pass through the interior of the pentagon.
5.
There are 5 sides, so the polygon is a pentagon.
A line containing side
NM
will pass through the
interior of the pentagon, so it is concave. The sides
are not congruent, so it is irregular.
6.
There are 6 sides, so the polygon is a hexagon.
No line containing any of the sides will pass
through the interior of the hexagon, so it is
convex. The sides are congruent, and the angles
are congruent, so it is regular.
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 Fall '10
 Dr.Zhan
 Calculus, PreCalculus, Polygons, Regular polygon

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