Class 08 Activity – Understanding Quadrilaterals

Objective:

 To make the following by paper folding and cutting.(a) Kite (b) Rhombus

Materials Required:

 White sheets of paper, a pair of scissors, glue stick, geometry box, etc.

Procedure: 

(a) To make a kite

1. Take a white sheet of paper and fold it once from the middle as shown below.

2. Draw two line segments AB and BC of different lengths as shown.

3. Cut along the line a segments AB and BC and unfold the cut –out . Draw a dotted line along the  fold and mark the two other vertices as C and D.

(b) To make a rhombus

Take a sheet of paper and fold it from the middle as shown below. 

2. Draw two line segments AB and BC such that AB = BC as shown.

3. Cut along the line segments AB and BC and and unfold the cut out. Draw a dotted line along the fold and mark the two other vertices as C and D.

Observations:

On measuring the sides AB, BC, CD and DA in figure 3, we find that AB = AD and BC = DC.

Hence, ABCD in figure 3 is a kite.

2. On measuring the sides AB, BC, CD and AD in figure, we find that AB = BC = CD = AD.

Hence, ABCD  in figure 6 is a rhombus.