What are the different kinds of triangles according to sides and angles?

Six Types of Triangles

What are the 12 types of triangles?

Terms in this set (6)

• 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 types of triangles are polygons?

Three-Sided Polygons: Triangles

• A three-sided polygon is a triangle.
• A triangle with only acute internal angles is called an acute (or acute-angled) triangle.
• Each of these will also be either equilateral, isosceles or scalene.
• A regular polygon has equal length sides with equal angles between each side.

How do you classify triangles by angles?

Classifying Triangles by Angles Triangles can also be classified by their angles. In an acute triangle all three angles are acute (less than 90 degrees). A right triangle contains one right angle and two acute angles. And an obtuse triangle contains one obtuse angle (greater than 90 degrees) and two acute angles.

What are the kinds of triangles according to sides?

There are three types of triangle based on the length of the sides: equilateral, isosceles, and scalene.

What is S in triangle?

There are several ways to compute the area of a triangle. Another is Heron’s formula which gives the area in terms of the three sides of the triangle, specifically, as the square root of the product s(s – a)(s – b)(s – c) where s is the semiperimeter of the triangle, that is, s = (a + b + c)/2. …

What is a half triangle called?

Isosceles triangle
The two equal sides are called the legs and the third side is called the base of the triangle….

How do you classify triangles?

Triangles can be classified by their sides and by their angles. When classifying a triangle by its sides, you should look to see if any of the sides are the same length. If no sides are the same length, then it is a scalene triangle. If two sides are the same length, then it is an isosceles triangle.

What is a 28 sided shape called?

icosioctagon
In geometry, an icosioctagon (or icosikaioctagon) or 28-gon is a twenty eight sided polygon. The sum of any icosioctagon’s interior angles is 4680 degrees.

What are the six types of triangles?

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.
• An equilateral triangle is a triangle with three congruent sides and three congruent angles.

What kind of Polygon has 3 sides and 3 angles?

To recall, a triangle is a specific type of polygon having only three sides and three angles. As the name suggests, a “triangle” is a type of polygon having three angles. The sum of all interior angles of a triangle will always add up to 180 degrees.

What are the different types of triangles according to their sides?

You will also find some useful information on triangles according to their angles, and also according to both. The first of three kinds of triangles according to sides is the equilateral triangle. This geometric shape has three sides of equal length or measure, and three equal angles of sixty degrees each.

How many sides does an equilateral triangle have?

An equilateral triangle has all three sides equal to 10cm and angles measure to 60°. A regular pentagon has 5 equal sides and all the interior angles measures to 108 degrees. A polygon with an irregular shape. It means the sides and angles of the polygon are not equal. A quadrilateral with unequal sides.

What makes a triangle perfect according to its sides?

– The Equilateral Triangle The first of three kinds of triangles according to sides is the equilateral triangle. This geometric shape has three sides of equal length or measure, and three equal angles of sixty degrees each. The equality among its sides and angles is called ‘congruence’, and makes it a perfect shape.