# How many sides are there in a septagon?

7

A.

### 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 the sum of the exterior angles of a 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**.

B.

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

7 sides

#### How many sides are on a parallelogram?

convex.

In Euclidean geometry, a parallelogram is a simple (non-self-intersecting) quadrilateral with**two**pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure.#### How many sides do a decagon have?

10 sides#### How many more sides does a decagon have than a Heptagon?

Polygons: How Many Sides?3 triangle, trigon 7 heptagon 8 octagon 9 nonagon, enneagon 10 decagon

C.

### 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.#### How many degrees are in a 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**.#### What is the name of a 18 sided figure?

An octadecagon (or octakaidecagon) or 18-**gon**is an eighteen-sided polygon.#### How many lines of symmetry does octagon have?

8 lines

Updated: 2nd October 2019