Parts or elements of a quadrilateral are discussed here.

ABCD is a quadrilateral with four sides namely AB, BC, CD and DA.

It has four vertices namely A, B, C and D. The angle between two adjacent sides is an angle of the quadrilateral. So, a quadrilateral has four angles that is, ∠DAB, ∠ABC, ∠BCD and ∠CDA.

A line segment joining a pair of opposite vertices is called a *diagonal*. So, there are two diagonals namely AC and BD.

A quadrilateral may have some relations between its sides and angles. On the basis of these relations, quadrilaterals are classified and given different names.

**Construction of Perpendicular Lines by using a Protractor.**

**Sum of Angles of a Quadrilateral.**

**Practice Test on Quadrilaterals.**

**5th Grade Geometry Page** **5th Grade Math Problems** **From Elements of a Quadrilateral to HOME PAGE**

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