Pre-Calculus Homework Solutions 15

# Pre-Calculus - 60 s 4s 2 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[0 3]2(4 4)2 32 02 9 3 Perimeter PQ QR RS PS

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60. s 5 ¬ 2 4 s 5 ¬ 4(2) 5 ¬ 8 61. , 5 3, w 5 ¬ 8, s 5 2 , w 1 ws 5 ¬ 3 ? 8 1 8 ? 2 5 ¬ 24 1 16 or 40 62. , 5 3, w 5 ¬ 8, s 5 2 s ( , 1 w ) 5 ¬ 2(3 1 8) 5 ¬ 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 5 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 N w M w 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
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## This note was uploaded on 12/19/2011 for the course MAC 1140 taught by Professor Dr.zhan during the Fall '10 term at UNF.

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