Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter7: Locus And Concurrence
Section7.3: More About Regular Polygons
Problem 28E: If possible, draw an equilateral and concave: a triangle c pentagon
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Concept explainers
Cylinders
A cylinder is a three-dimensional solid shape with two parallel and congruent circular bases, joined by a curved surface at a fixed distance. A cylinder has an infinite curvilinear surface.
Cones
A cone is a three-dimensional solid shape having a flat base and a pointed edge at the top. The flat base of the cone tapers smoothly to form the pointed edge known as the apex. The flat base of the cone can either be circular or elliptical. A cone is drawn by joining the apex to all points on the base, using segments, lines, or half-lines, provided that the apex and the base both are in different planes.
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![In the accompanying diagram of circle O,
AB || CD, BC is a diameter, and radius AO is
drawn. If MLABC = 20, find mBD.
A
B
20
D
5.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F33e84772-464f-4752-aaef-eb16750a4130%2F95ab39e0-1c83-4a24-94be-1e83b2e6bbe4%2Fgsan6o_processed.jpeg&w=3840&q=75)
Transcribed Image Text:In the accompanying diagram of circle O,
AB || CD, BC is a diameter, and radius AO is
drawn. If MLABC = 20, find mBD.
A
B
20
D
5.
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