# What type of polygon has 20 diagonals?

## What type of polygon has 20 diagonals?

octagon
an octagon has 8(8−3)/2 = 8×5/2 = 20 diagonals.

How many diagonals are there in a polygon of 20 sides?

170 diagonals
Therefore, for a 20-sided polygon, there will be 190 lines and 170 diagonals.

How do you find the sides of a rhombus when given the diagonals?

If the perimeter and one diagonal are given, we find the side of the rhombus by dividing the perimeter by 4 since all the sides of the rhombus are equal. Since the diagonals of a rhombus bisect each other at right angles, half of each diagonal and the side of the rhombus form a right-angled triangle.

### How many diagonals does a rhombus have?

two diagonals
Every rhombus has two diagonals connecting pairs of opposite vertices, and two pairs of parallel sides.

What do you call a polygon with 20 sides?

In geometry, an icosagon or 20-gon is a twenty-sided polygon. The sum of any icosagon’s interior angles is 3240 degrees.

How many vertices would a 20 sided polygon have?

A 20-sided polygon has 20 vertices.

#### Are the sides of a rhombus equal?

All sides of a rhombus are equal.

How do you find the sides of a rhombus?

If a rhombus has a base that is times greater than the height and the height of the rhombus is equal to , find the length of one side of the rhombus. Explanation: To find the length of a side of the rhombus, multiply times .

How many sides does a polygon have with 230 diagonals?

¿How many diagonals does a 23-sided polygon have? Answer: 230 = 23×20/2 = 23×10.

## How many sides does a polygon have if the polygon has 14 diagonals?

Since, a polygon can’t have negative sides. Therefore, the answer is 7.

Do rhombus have equal diagonals?

The diagonals of a rhombus intersect at equal angles, while the diagonals of a rectangle are equal in length.

What are the diagonals of the rhombus?

Where the diagonals of the rhombus are d 1 & d 2 and ‘a’ is the side. Some of the important properties of the rhombus are as follows: All sides of the rhombus are equal. The opposite sides of a rhombus are parallel. Opposite angles of a rhombus are equal. In a rhombus, diagonals bisect each other at right angles.

### How many sides of a polygon of 20 diagonals?

How many sides of a polygon of 20 diagonals? n = 8 sides or regular Octagon…… Option 2) Like? Yes (5) | No Like? Yes (3) | No Like? Yes (2) | No Like? Yes (2) | No (1) Like? Yes (1) | No If there are n sides/ vertices in a polygon, no of diagonals starting from a point ( vertex) can be (n-3) only.

How to find the diagonal of a polygon?

Go through the below problems to find the diagonal of a polygon. Now, put the value of √2, which is equal to 1.414 d = 5.656. Determine the diagonal of a rhombus whose area is 50cm 2 and one of its diagonal measures is 7cm. Hence, the other diagonal of a rhombus is 14.3 cm.

What are the opposite sides of a rhombus equal to?

The opposite sides of a rhombus are parallel. Opposite angles of a rhombus are equal. In a rhombus, diagonals bisect each other at right angles. Diagonals bisect the angles of a rhombus. The sum of two adjacent angles is equal to 180 degrees.