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प्रश्न
Draw two circles each of radius 2.5 cm touching each other. Construct the lines of symmetry of these circles.
उत्तर
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संबंधित प्रश्न
Use a graph paper to answer the following questions (Take 1 cm = 1 unit on both axes)
1) Plot A(4,4), B(4,-6) and C(8,0), the vertices of a triangle ABC.
2) Reflect ABC on the y-axis and name it A’B’C’.
3) Write the coordinates of the images A’, B’ and C’.
4) Give a geometrical name for the figure AA’ C’ B’ BC.
5) Identify the line of symmetry of AA’ C’ BC’.
In the following figures, the line of symmetry has been drawn with a dotted line. Identify the corresponding sides and the corresponding angles about the line of symmetry.
Complete the following figure, about the given lines of symmetry which are shown by dotted lines and name the figure thus obtained:
Complete the following figure, about the given lines of symmetry which are shown by dotted lines and name the figure thus obtained:
Part of a geometrical figure is given in each of the diagrams below. Complete the figures so. that the line AB in each case is a line of symmetry of the completed figure.
Give also the geometrical name for the completed figure. Recognizable free hand Sketches would be awarded full marks.
A 45° – 45° – 90° set-square and a protractor have the same number of lines of symmetry.
Is there any line of symmetry in the figure? If yes, draw all the lines of symmetry.
| Shape | Number of lines of symmetry |
| (i) Isosceles triangle | (a) 6 |
| (ii) Square | (b) 5 |
| (iii) Kite | (c) 4 |
| (iv) Equilateral triangle | (d) 3 |
| (v) Rectangle | (e) 2 |
| (vi) Regular hexagon | (f) 1 |
| (vii) Scalene triangle | (g) 0 |
Copy the triangle in the following figure on squared paper. Draw the line(s) of symmetry, if any and identify the type of triangle. (Some of you may like to trace the figure and try paper-folding first!)
Consider the letters of English alphabets, A to Z. List among them the letters which have horizontal lines of symmetry (like B).
