# 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.

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

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