A quadrilateral is a polygon which has 4 vertices and 4 sides enclosing 4 angles. The sum of its interior angles of a quadrilaterl is 360 degree.
Types of Quadrilaterals
- Trapezium: It is a quadrilateral with one pair of opposite parallel sides. In the trapezium ABCD, side AB is parallel to side CD.
- Parallelogram: It is a quadrilateral with two pairs of parallel sides.
- The opposite sides are parallel and equal in length.
- The opposite angles are equal in measure. In the parallelogram ABCD, side AB is parallel to side CD and side AD is parallel to side BC.
- Also, the two diagonals formed intersect each other at the midpoints. As in the figure given below, E is the point where both the diagonals meet. So
Length AE = EC, & Length BE = ED
- Rectangle: It is a quadrilateral with all the 4 angles of equal measure, that is, each of them is 90°.
- Both the pairs of opposite sides are parallel and equal in length.
- Rhombus: It is a quadrilateral with all the four sides having equal lengths.
- The Opposite sides of a rhombus are parallel and opposite angles are equal.
- Square: It is a quadrilateral in which all the sides and angles are equal.
- Every angle is a right angle (i.e. 90° each).
- The pairs of opposite sides are parallel to each other.
- Kite: It is a quadrilateral that has 2 pairs of equal-length sides and these sides are adjacent to each other.
No comments:
Post a Comment