60.s¬24s¬4(2)¬861.3,w¬8,s2wws¬3882¬2416 or 4062.3,w¬8,s2s(w)¬2(38)¬2(11) or 22Page 44 Geometry Activity: ConstructingPerpendiculars1.See students’ work.2.The first step of the construction locates twopoints on the line. Then the process is very similarto the construction through a point on a line.PolygonsPage 48Check for Understanding1.A regular decagon has 10 congruent sides,so divide the perimeter by 10.2.Saul; Tiki’s figure is not a polygon.3.P3s4.Sample answer: Some of the lines containing thesides pass through the interior of the pentagon.5.There are 5 sides, so the polygon is a pentagon.A line containing side NMwill pass through theinterior of the pentagon, so it is concave. The sidesare 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 passthrough the interior of the hexagon, so it isconvex. The sides are congruent, and the anglesare congruent, so it is regular.
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