# What is the shape of a Heptagon?

A

**polygon**is an enclosed two-dimensional shape with**straight**sides. This includes triangles, quadrilaterals, pentagons, etc but not circles or ovals. A heptagon is a seven-sided**polygon**. Along with seven sides, a heptagon has seven vertices and angles.A.

### How many sides are there in a septagon?

7

#### What is the name of a 9 sided shape?

In geometry, a**nonagon**/ˈn?n?g?n/ (or**enneagon**/ˈ?niː?g?n/) is a nine-sided polygon or 9-gon. The name "**nonagon**" is a prefix hybrid formation, from Latin (nonus, "ninth" + gonon), used equivalently, attested already in the 16th century in French nonogone and in English from the 17th century.#### What is the name of a shape with 100 sides?

Polygons are named after the number of sides that they have. A**100**-**sided polygon**is**called**a hectogon. Take the hundreds digit, find it on the column for ones digits, then stick a "hecta" to its right. Now number off the tens and ones like above: (hundreds)hecta(tens)kai(ones)gon .#### What is the name of a six sided shape?

Hexagon. A hexagon is a**6**-**sided polygon**(a flat**shape**with straight**sides**). Regular Hexagon. Area = 23.38268590218. Angles.

B.

### What is the angle of Heptagon?

To find the measure of the interior angles, we know that the sum of all the angles is

**900 degrees**(from above) And there are seven angles So, the measure of the interior angle of a regular heptagon is about**128.57 degrees**.#### Do all quadrilaterals have 360 degrees?

The**Quadrilateral**Sum Conjecture tells us the sum of the angles in any convex**quadrilateral is 360 degrees**. Remember that a polygon**is**convex if each of its interior angles**is**less that 180**degree**.#### Which polygon has interior angles whose sum is 1440?

You can start with the formula for the sum of the interior angles (S) of a regular polygon of n-sides: Since you know that this sum is 1440 degrees, you can substitute this into the formula and solve for n, the number of sides. The regular polygon has**10**sides. This is known as a decagon.#### What is an irregular Heptagon?

This includes triangles, quadrilaterals, pentagons, etc but not circles or ovals. A**heptagon**is a seven-sided polygon. A regular**heptagon**is a**heptagon**that has congruent sides and angles. An**irregular heptagon**is any**heptagon**with sides and angles that are not all congruent.

C.

### How many sides are there in a Heptagon?

7 sides

#### How many sides do a decagon have?

10 sides#### What is the name of a 8 sided shape?

In geometry, an octagon (from the Greek ?κτάγωνον oktágōnon, "eight angles") is an eight-**sided polygon**or**8**-gon. A regular octagon has Schläfli symbol {**8**} and can also be constructed as a quasiregular truncated square, t{4}, which alternates two types of edges. A truncated octagon, t{**8**} is a hexadecagon, t{16}.#### What is the shape that has 12 sides?

Regular**dodecagon**. A regular**dodecagon**is a figure with sides of the same length and internal angles of the same size. It has twelve lines of reflective symmetry and rotational symmetry of order 12.

Updated: 2nd October 2019