Keke J.
asked • 03/23/14Devon and Jamal both draw regular polygons. Devon's polygon has 14 sides. Jamal's polygon has 15 sides. Which statement is NOT true?
Devon and Jamal both draw regular polygons. Devon's polygon has 14 sides. Jamal's polygon has 15 sides.
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3 Answers By Expert Tutors
IBRAHIM A. answered • 03/24/14
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Educated Tutor For Excellent Grades in Various Subjects
This is not true: Devon and Jamal both draw regular polygons.
because Devon has drawn a regular tetra-decagon and Jamal drew a regular pentadecagon
Steve S.
What's not true?
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03/24/14
IBRAHIM A.
Devon and Jamal both draw regular polygons - Not true
Devon's polygon has 14 sides - True
Jamal's polygon has 15 sides - True
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03/24/14
Steve S.
"A regular polygon is ... both equiangular and equilateral."; per http://mathworld.wolfram.com/RegularPolygon.html. The Pentagon in Washington is a regular 5-gon. Stop signs are regular octagons. Equilateral triangles are regular trigons. Squares are regular
4-gons.
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03/24/14
Parviz F.
I agree, the question does not ask for the difference in sides of the polygons, as far as regularity both are regular , but different sides.
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03/24/14
Steve S. answered • 03/24/14
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Tutoring in Precalculus, Trig, and Differential Calculus
14 sides:
Each external angle: 360°/14
Each internal angle: 180°-360°/14
15 sides
Each external angle: 360°/15
Each internal angle: 180°-360°/15
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3/27/14, 22:05 EST
Devon and Jamal both draw regular polygons. Devon's polygon has 14 sides. Jamal's polygon has 15 sides. Which statement is NOT true?
A. The measures of all the exterior angles of Devon’s polygon are equal.
B. The sum of all the exterior angles of Devon’s polygon equals the sum of all the exterior angles of Jamal’s polygon.
C. The measure of one of the exterior angles of Jamal’s polygon is greater than the measure of one of the exterior angles of Devon’s polygon.
D. The measure of one of the exterior angles of Jamal’s polygon plus the measure of the adjacent interior angle is 180°.
C is FALSE. Jamal’s exterior angles are each 360°/15 while Devon’s exterior angles are each 360°/14. So Devon’s is larger.
All the others are TRUE.
Each external angle: 360°/14
Each internal angle: 180°-360°/14
15 sides
Each external angle: 360°/15
Each internal angle: 180°-360°/15
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3/27/14, 22:05 EST
Devon and Jamal both draw regular polygons. Devon's polygon has 14 sides. Jamal's polygon has 15 sides. Which statement is NOT true?
A. The measures of all the exterior angles of Devon’s polygon are equal.
B. The sum of all the exterior angles of Devon’s polygon equals the sum of all the exterior angles of Jamal’s polygon.
C. The measure of one of the exterior angles of Jamal’s polygon is greater than the measure of one of the exterior angles of Devon’s polygon.
D. The measure of one of the exterior angles of Jamal’s polygon plus the measure of the adjacent interior angle is 180°.
C is FALSE. Jamal’s exterior angles are each 360°/15 while Devon’s exterior angles are each 360°/14. So Devon’s is larger.
All the others are TRUE.
Parviz F. answered • 03/23/14
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Mathematics professor at Community Colleges
Where are the statements?
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03/23/14