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# Do all triangles have 3 equal sides and 3 angles?

## Do all triangles have 3 equal sides and 3 angles?

A triangle with all sides equal is called an equilateral triangle, and a triangle with no sides equal is called a scalene triangle. An equilateral triangle is therefore a special case of an isosceles triangle having not just two, but all three sides and angles equal. The triangles are therefore perspective triangles.

What do we call a polygon with three sides and 3 angles?

For example, the polygon with three sides is called a triangle because “tri” is a prefix that means “three.” Its name also indicates that this polygon has three angles. The prefix “poly” means many.

### Which figure has exactly 3 equal sides?

Equilateral triangles An equilateral triangle has three equal sides and three equal angles (which are each 60°). Its equal angles make it equiangular as well as equilateral.

Is a triangle 3 equal sides?

An equilateral triangle has three equal sides and angles. It will always have angles of 60° in each corner.

#### Is a rhombus a parallelogram?

Every rhombus is simple (non-self-intersecting), and is a special case of a parallelogram and a kite. A rhombus with right angles is a square….

Rhombus
Edges and vertices 4
Schläfli symbol { } + { } {2α}
Coxeter diagram

Is a square a rhombus?

The sides of a square are perpendicular to each other and its diagonals are of equal length. A rhombus is a quadrilateral in which the opposite sides are parallel and the opposite angles are equal….Difference Between Square and Rhombus.

SQUARE RHOMBUS
A square has four lines of symmetry. A rhombus has two lines of symmetry.

## Is a polygon with three sides and three angles?

As you learned in the last lesson, a triangle is the simplest polygon, having three sides and three angles. The sum of the three angles of a triangle is equal to 180 degrees.

What is a quadrilateral with 3 equal sides?

An equilateral triangle has three equal sides. It also has three equal angles. A triangle has three sides and three vertices.

### What shape is a rhombus?

In plane Euclidean geometry, a rhombus (plural rhombi or rhombuses) is a quadrilateral whose four sides all have the same length. Another name is equilateral quadrilateral, since equilateral means that all of its sides are equal in length.

What is a pentagon shape?

A pentagon shape is a flat shape or a flat (two-dimensional) 5-sided geometric shape. In geometry, it is considered as a is a five-sided polygon with five straight sides and five interior angles, which add up to 540°. Pentagons can be simple or self-intersecting.

#### Is a square a trapezoid?

Since a square has 4 right angles, it can also be classified as a rectangle. The opposite sides are parallel so a square can also be classified as a parallelogram. If it is classified as a parallelogram then it is also classified as a trapezoid.

What shape has 3 sides?

Another way to group triangles is by looking at the lengths of their sides: Equilateral triangle: An equilateral triangle is one in which all three sides have the same length. Isoceles triangle: An isoceles triangle is one in which two sides have the same length. Scalene triangle: A scalene triangle is one in which all three sides have different lengths.

## What is a 3 sided shape called?

A Triangle is a shape with three sides whose sum of the angles is 180 degree. It is also known as 3 sided polygon.

How many shapes does a parallelogram have?

Parallelograms are shapes that have four sides with two pairs of sides that are parallel. The four shapes that meet the requirements of a parallelogram are square, rectangle, rhombus, and rhomboid .