# Types of triangles by angles

## What are the 7 types of triangles?

- Scalene Triangle. A scalene triangle is a type of triangle, in which all the three sides have different side measures. …
- Isosceles Triangle. In an isosceles triangle, two sides have equal length. …
- Equilateral Triangle. …
- Acute Angled Triangle. …
- Right Angled Triangle. …
- Obtuse Angled Triangle.

## What are the 4 types of triangle?

This math worksheet gives your child practice identifying

**equilateral, isosceles, scalene, and right triangles**.## What are the 12 types of triangles?

**Match**

- Scalene Triangle. A triangle that has no congruent sides.
- Acute Triangle. A triangle that has all three angles with measures of less than 90 degrees.
- Obtuse Triangle. A triangle that has one angle with a measure of greater than 90 degrees.
- Isosceles Triangle. …
- Equilateral Triangle. …
- Right Triangle.

## What kind of triangle has angles 60 60 60?

**Acute triangles**

The degree labels for all 3 angles are highlighted. A triangle with angle measures of 60 degrees, 60 degrees, and 60 degrees. The degree labels for all 3 angles are highlighted.

## What are the three main triangles?

According to the lengths of their sides, triangles can be classified into three types which are:

**Scalene**.**Isosceles**.**Equilateral**.## How many triangles are there name?

The six types of triangles are: isosceles, equilateral, scalene, obtuse, acute, and right. An isosceles triangle is a triangle with two congruent sides and one unique side and angle.

## What is a 120 degree angle called?

**obtuse angle**-an angle between 90 and 180 degrees.

## What is a 90 angle called?

Angles that are 90 degrees (Î¸ = 90Â°) are

**right angles**. â€¢ Angles that are 180 degrees (Î¸ = 180Â°) are known as straight angles.## What type of triangle is a 45 45 90 triangle?

isosceles right triangle

A 45 45 90 triangle is a special type of

**isosceles right triangle**where the two legs are congruent to one another and the non-right angles are both equal to 45 degrees.## What Quadrilaterals have 4 sides?

**A square**is a quadrilateral with 4 equal sides and 4 right angles. A shape with four sides of equal length.

## What is the scalene triangle?

A scalene triangle is

**a triangle in which all three sides are in different lengths, and all three angles are of different measures**. However, the sum of all the interior angles is always equal to 180 degrees. Thus, it meets the angle sum property of the triangle.## What is a scalene and acute triangle?

**An acute triangle is one whose all angles are acute (less than 90 degrees) and a scalene triangle is one whose all three sides and angles are different in measurement**. So, the acute scalene triangle properties are listed below: It has three acute angles. All the sides and angles are different in measure.

## What is a true triangle?

A triangle is a closed, 2-dimensional shape with 3 sides, 3 angles, and 3 vertices. A triangle is also a polygon.

## What is a slanted triangle called?

An acute triangle (or acute-angled triangle) is a triangle with three acute angles (less than 90Â°). An obtuse triangle (or obtuse-angled triangle) is a triangle with one obtuse angle (greater than 90Â°) and two acute angles.

## What is the obtuse angle triangle?

**A triangle whose any one of the angles is an obtuse angle or more than 90Â°**, then it is called an obtuse-angled triangle or obtuse triangle. The sum of the interior angles of the obtuse triangle is equal to 180Â° only. This means the angle sum property for any triangle remains the same.

## What is an isosceles obtuse triangle?

Isosceles obtuse triangle: An isosceles obtuse triangle is

**a triangle in which one of the three angles is obtuse (lies between 90Â° and 180Â°), and the other two acute angles are equal in measurement**. One example of isosceles obtuse triangle angles is 30Â°, 30Â°, and 120Â°.## What is a trapezium triangle?

Trapezium is

**a flat shape or two dimensional shape with 4 straight sides**. It is also known as trapezoid, which contains two parallel sides (usually called bases) and two non-parallel sides called legs.## Is a trapezoid a triangle?

**A triangle is not a trapezoid**, because each shape has a different number of sides and internal angles. Trapezoids also have one set of parallel sides, where triangles have none. However, a trapezoid can be broken down into multiple triangles. A trapezoid is composed of three triangles.