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प्रश्न
Consider the letters of English alphabets, A to Z. List among them the letters which have horizontal lines of symmetry (like B).
उत्तर
B, C, D, E, H, I, K, O, X
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संबंधित प्रश्न
Use a graph paper for this question taking 1 cm = 1 unit along both the x and y-axis :
1) Plot the points A(0, 5), B(2, 5), C(5, 2), D(5, -2), E(2, -5) and F(0, -5).
2) Reflect the points B, C, D and E on the y-axis and name them respectively as B’, C’, D’ and E’.
3) Write the coordinates of B’, C’, D’ and E’.
4) Name the figure formed by B C D E E’ D’ C’ B’.
5) Name a line of symmetry for the figure formed.
Use graph paper to answer the following questions. (Take 2 cm = 1 unit on both axes)
1) Plot the points A( -4, 2) and B(2, 4)
2) A' is the image of A when reflected at the y-axis. Plot it on the graph paper and write the coordinates of A'.
3) B' is the image of B when reflected on the line AA'. Write the coordinates of B'.
4) Write the geometric name of the figure ABA'B'.
5) Name a line of symmetry of the figure formed
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’.
Given below are part of a geometrical figure. Complete the figure so that both axes are lines of symmetry.
Construct a rectangle ABCD with AB = 5 cm and AD = 3cm. Construct its lines of symmetry.
In the following figures, the figure that is not symmetric with respect to any line is ______.
In figure, if B is the image of the point A with respect to the line l and P is any point lying on l, then the lengths of the line segments PA and PB are ______.
Open your geometry box. There are some drawing tools. Observe them and complete the following table:
| Name of the tool | Number of lines of symmetry |
| (i) The Ruler | ______ |
| (ii) The Divider | ______ |
| (iii) The Compasses | ______ |
| (iv) The Protactor | ______ |
| (v) Triangular piece with two equal sides | ______ |
| (vi) Triangular piece with unequal sides | ______ |
Find the number of lines of symmetry for the following shape:
Find the number of lines of symmetry in the following shapes. How will you check your answers?
