If the pentagon is a regular pentagon, then each of the central angles (formed by joinning the center with the vertices) is72⁰ (1/5 of 360⁰). So that 5 congruent isosceles triangle are formed, with base angles of 54⁰. If we draw the height, of these triangles (from the center to the sides of the pentagon), 10 congruent right triangles are formed. Let denote with:
b the sides of the pentagon, and
h the height. In one of the right triangles we have: tan 54⁰ = h/(b/2)
tan 54⁰ = 2h/b
1.38 = 2h/b
2h = 1.38b
h = (1.38/2)b
h = .69b So that, h/b = .69b/b = .69
1.539
pentagon a pentagon A pentagon is a Polygon with 5 sides.
A regular pentagon does not have any perpendicular sides. A pentagon is made up of five sides. An irregular pentagon which has sides that are not equal may have a perpendicular side.
A hexagon has six sides, and a pentagon has five sides
An octagon has 8 sides and a pentagon has 5 sides.
A pentagon has five sides and a hexagon has six sides.
1.78x
4/5 0.8
A regular pentagon has all sides the same length. A pentagon has 5 sides. Its perimeter is the sum of its side_lengths which is 5 x side_length → ratio side_length : perimeter = 1 x side_length : 5 x side_length = 1 : 5
Hexagon * * * * * A pentagon
A pentagon has five sides.
No, a pentagon has 5 sides.
A pentagon has 5 sides
A pentagon has 5 sides
A pentagon, by definition, has 5 sides - not 12.A pentagon, by definition, has 5 sides - not 12.A pentagon, by definition, has 5 sides - not 12.A pentagon, by definition, has 5 sides - not 12.
An octagon has 8 sides and a pentagon has 5 sides.
it has 5 sides A pentagon has five sides. "Regular" means that they are all the same length. A pentagon has 5 sides. 5 There are 5 sides in a regular pentagon a plane figure with five sides and angles There are 5 sides 5 5 sides
pentagon a pentagon A pentagon is a Polygon with 5 sides.