# Are regular polygons made up of equilateral triangles?

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All regular polygons and isotoxal polygons are equilateral. An equilateral triangle is a regular triangle with 60° internal angles. Thus if the number of sides n is odd, a tangential polygon is equilateral if and only if it is regular.

Likewise, is a regular Pentagon made up of equilateral triangles?

The requirement is that all angles must add up to 540 degrees and must be between 0 and 360 degrees but not equal to 180 degrees. In contrast, the regular pentagon is unique, because it is equilateral and moreover it is equiangular (its five angles are equal; the measure is 108 degrees).

Similarly, what polygon can you make from equilateral triangles? A regular hexagon contains six equilateral triangles. In general, we can split a regular polygon with n sides into equilateral triangles by using the

Similarly, is a equilateral triangle a regular polygon?

An equilateral triangle is a regular polygon. It has all the same sides and the same angles.

Is a hexagon made of equilateral triangles?

A circle is 360 degrees around Divide that by six angles So, the measure of the central angle of a regular hexagon is 60 degrees. A regular hexagon is made up of 6 equilateral triangles!

five

### Does a regular Pentagon have right angles?

There are no right angles among interior angles of a regular pentagon.

4 triangles

### Are all angles in a regular Pentagon equal?

All sides are the same length (congruent) and all interior angles are the same size (congruent). To find the measure of the interior angles, we know that the sum of all the angles is 540 degrees (from above) And there are five angles So, the measure of the interior angle of a regular pentagon is 108 degrees.

### How many equilateral triangles are there in a pentagon?

five equilateral triangles

### How many triangles are in a hexagon from one vertex?

From this it can be seen that a triangle with a vertex at the center of the regular hexagon and sharing one side with the hexagon is equilateral, and that the regular hexagon can be partitioned into six equilateral triangles.

### How do you make a pentagon of a triangle?

Let's draw the center of the pentagon and divide it into 5 congruent triangles, then bisect one of those 5 into two congruent right triangles: By symmetry, you should see that the 108 degree interior angles of the pentagon make the 54 degree angles.

### What is hexagon shape?

The hexagon is a six sided polygon. Each side must be closed and the shape not only needs six sides to qualify as a hexagon, but it must have six angles.

### Is circle a polygon?

Polygons. A polygon is a closed plane figure with three or more sides that are all straight. The following figure is not a polygon as it is not a closed figure. A circle is not a polygon as it does not have straight sides.

### Is rectangle a polygon?

Polygons are many-sided figures, with sides that are line segments. Polygons are named according to the number of sides and angles they have. The most familiar polygons are the triangle, the rectangle, and the square. A regular polygon is one that has equal sides.

### What is the formula of polygon?

A regular polygon is a flat shape whose sides are all equal and whose angles are all equal. The formula for finding the sum of the measure of the interior angles is (n - 2) * 180. To find the measure of one interior angle, we take that formula and divide by the number of sides n: (n - 2) * 180 / n.

### What is the name of a polygon?

Names of Polygons
Name Sides Interior Angle
Heptagon (or Septagon) 7 128.571°
Octagon 8 135°
Nonagon (or Enneagon) 9 140°
Decagon 10 144°

### What is not a polygon?

An irregular polygon is any polygon that is not a regular polygon. It can have sides of any length and each interior angle can be any measure. They can be convex or concave, but all concave polygons are irregular since the interior angles cannot all be the same.

### What is the other name of equilateral triangle?

Equilateral triangle. In the familiar Euclidean geometry, an equilateral triangle is also equiangular; that is, all three internal angles are also congruent to each other and are each 60°. It is also a regular polygon, so it is also referred to as a regular triangle.

### Can a triangle be a regular polygon?

In geometry, three or more than three straight lines (or segment of a line) make a polygon and an equilateral polygon is a polygon which has all sides of the same length. Except in the triangle case, it doesn't need to be equiangular (doesn't need to have all angles equal), but if it does then it is a regular polygon.

### Is a star a polygon?

Yes, a star is a polygon. In geometry, a star is a special type of polygon that we call a star polygon. These types of polygons take on the general

### How many triangles are there in a 100 sided polygon?

How about a 100-gon? (That's a regular polygon with 100 sides.) There would be 98 triangles