In a triangle there room three sides. In theadjoining figure of a triangle abc we can observe that the variety of trianglescontained = 3 – 2 = 1.

You are watching: How many triangles are there in a pentagon


In a square there are four sides.Number of triangles included in a quadrilateral = 4 – 2 = 2.

In the adjoining figure of a quadrilateralABCD, if diagonal BD is drawn, the quadrilateral will certainly be separated into twotriangles i.e. ∆ABD and also ∆BDC.


In a pentagon over there are five sides. Numberof triangles contained in a pentagon = 5 – 2 = 3.

In the adjoining number of a pentagonABCDE, on joining AC and also AD, the given pentagon is divided into 3 trianglesi.e. ∆ABC, ∆ACD and ∆ADE.


In a hexagon there are six sides. Number oftriangles consisted of in a hexagon = 6 – 2 = 4.

In the adjoining figure of a hexagon ABCDEF,on authorized AC, advertisement and AE, the offered hexagon is divided into four triangles i.e.∆ABC, ∆ACD, ∆ADE and also ∆AEF.



Polygon and its Classification

Terms regarded Polygons

Interior and Exterior that the Polygon

Convex and also Concave Polygons

Regular and Irregular Polygon

Number the Triangles consisted of in a Polygon

Angle Sum property of a Polygon

Problems on edge Sum building of a Polygon

Sum the the internal Angles the a Polygon

Sum the the Exterior angle of a Polygon

7th Grade mathematics Problems 8th Grade math Practice From variety of Triangles consisted of in a Polygon to home PAGE

New! Comments

Have your say about what you just read! leaving me a comment in the box below. Ask a question or prize a Question.

See more: What Is 42 Out Of 46 As A Percentage, What Is 42/46 As A Percentage

Didn"t discover what you were looking for? Or desire to know an ext informationabout Math only Math.Use this Google search to discover what friend need.

E-mail Address
First Name
Then Don't problem — her e-mail address is entirely secure. I promise to use it only to send girlfriend Math only Math.

● Polygons - Worksheets