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In geometry, a pentadecagon or pentakaidecagon or 15-gon is a fifteen-sided polygon.
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Pentadecagon.
| Regular pentadecagon | |
|---|---|
| A regular pentadecagon | |
| Type | Regular polygon |
| Edges and vertices | 15 |
| Schläfli symbol | 15 |
- What does a 15 sided polygon add up to?
- What is the name of fourteen sided polygon?
- What is a seventeen sided shape called?
- What is the name of a eleven sided polygon?
- What is the name of 12 sided polygon?
- What is the name of 20 sides of polygon?
- What polygon has 9 sides?
- What do you call a shape with 10 sides?
What does a 15 sided polygon add up to?
Each triangle has an angle sum of 180 degrees, so the sum of the interior angles of the 15-gon must be 13 × 180 = 2340 degrees. Since the 15-gon is regular, this total is shared equally among the 15 interior angles. Each interior angle must have a measure of 2340 ÷ 15 = 156 degrees.
What is the name of fourteen sided polygon?
In geometry, a tetradecagon or tetrakaidecagon or 14-gon is a fourteen-sided polygon.
What is a seventeen sided shape called?
But what's widely considered his first important discovery is his construction of a 17-sided polygon called a heptadecagon, using only a ruler and a compass.
What is the name of a eleven sided polygon?
In geometry, a hendecagon (also undecagon or endecagon) or 11-gon is an eleven-sided polygon. (The name hendecagon, from Greek hendeka "eleven" and –gon "corner", is often preferred to the hybrid undecagon, whose first part is formed from Latin undecim "eleven".)
What is the name of 12 sided polygon?
In geometry, a dodecagon or 12-gon is any twelve-sided polygon.
What is the name of 20 sides of polygon?
In geometry, an icosagon or 20-gon is a twenty-sided polygon. The sum of any icosagon's interior angles is 3240 degrees.
What polygon has 9 sides?
A nine sided shape is a polygon called a nonagon. It has nine straight sides that meet at nine corners. The word nonagon comes from the Latin word "nona", meaning nine, and "gon", meaning sides. So it literally means "nine sided shape".
What do you call a shape with 10 sides?
In geometry, a decagon (from the Greek δέκα déka and γωνία gonía, "ten angles") is a ten-sided polygon or 10-gon. The total sum of the interior angles of a simple decagon is 1440°. A self-intersecting regular decagon is known as a decagram.
