Triangle
Definition of Triangle

• A three-sided Polygon is called to be a triangle.
• A Triangle is a Polygon with three sides.

More about Triangle

• Equilateral Triangle: A Triangle with all the sides of same Length is called equilateral triangle.
• Isosceles Triangle: A three-sided Polygon with at Least two sides of the same Length is called isosceles triangle.
• Scalene Triangle: A three-sided Polygon with no sides of the same Length is called scalene triangle.
• Right Triangle: A three-sided Polygon with one right Angle is called right triangle.
• Acute Triangle: A Triangle measuring all its angles less than 90° is called acute triangle.
  A three-sided Polygon with all its angles less than 90° is called acute triangle.
• Obtuse Triangle: A Triangle with one of its Angle measuring More than 90° is called obtuse triangle.

Examples of Triangle

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Solved Example on Triangle

A piece of land is in the shape of a Triangle with the sides of Length 5 m, 5 m, and 3 m? What is this Triangle called?   
Choices:
A. right triangle
B. scalene triangle
C. isosceles triangle
D. equilateral triangle
Correct Answer: C
Solution:
Step 1: Two of the three sides are equal to 5 m.                             
Step 2: Since two sides are equal, the land is in the form of an isosceles triangle.

Related Terms for Triangle

• Polygon
• Three-sided figure

Additional Links for Triangle

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