Take two identical 30° - 60° - 90° set squares and form a parallelogram as before, Does the figure obtained helps you to confirm the above property ?

Take two identical set squares with angles 30^(@)-60^(@)-90^(@) and place these adjacently to form a parallelogram as shwon in the fig . Does this help you to verify the above property property: The opposite sides of a parallelogram are of equal length.

There are two" set-square" in your box.What are the measures of the anles that ae formed at their corners?Do they have any angle measure that is common?

Copy the figure given here. Take any one diagonal as a line of symmetry and shade a few more squares to make the figure symmetric about a diagonal. Is there more than one way to do that? Will the figure be symmetric about both the diagonals?

You have two set -squares in your mathematical instruments box . Are they symmetric ? There are two set squares in our mathematical instruments box , they are : (i) 30^(@) - 60^(@) - 90^(@) set square (ii) 45^(@)- 45^(@)-90^(@) set square

Take a thick white sheet. Fold the paper once. Draw two line segments of different lengths as shown in the figure. Cut along the line segments and open up. You have the shape of a kite. Has the kite any line symmetry ? Fold both the diagonals of the kite. Use the set-square to check if they cut at right angles. Are the diagonals equal in length ? Verify (by paper-folding or measurement) if the diagonals bisect each other. By folding an angle of the kite. on its opposite check for angles of equal measure. Observe the diagonal folds, do they indicate any diagonal being an angle bisector ? Share your findings with others and list them. A summary of these results are given elsewhere in the chapter for your reference.

Take identical cut outs of congruent triangles of sides 3 cm ,4cm , 5cm Arrange them as shown . You get a trapezium (check if) which are the parallel sides here ? should the non -parallel sides be equal ? You can get two more trapeziums using the same set of triangles. Find them out and discuss their shapes.

Take two glass jars and fill them with water. Now, take two onion bulbs and place one on each jar, as shown in Fig. 6.1 of the textbook page 69. Observe the growth of roots in both the bulbs for a few days. Measure the length of roots on day 1, 2 and 3. . On day 4, cut the root tips of the onion bulb in jar 2 hy about 1 cm. After this, observe the growth of roots in both the jars and measure their lengths each day for five more days and record the observations in tables, like the table below: From the observations, answer the following questions : Do the roots continue growing even after we have removed their tips?

Balls are arranged in rows to form an equilateral triangle. The first row consists of one ball, the second row of two balls and so on. If 669 more balls are added,then all the balls can be arranged in the shape of a square and each of the sides, then contains 8 balls less than each side of the triangle. Determine the initial number of balls.