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प्रश्न
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.
उत्तर
The geometrical name of the completed figure is equilateral triangle.
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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.
AB is a diameter of a circle with centre C = (–2, 5). If A = (3, –7). Find
1) the length of radius AC
2) the coordinates of B.
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 geometrical figure is given in each of the diagrams below. Complete the figures, so that the line ‘m’, in each case, is the line of symmetry, of the completed figure. Recognizable free hand sketches, would be awarded full marks.
Using the given horizontal line/vertical line as a line of symmetry, complete each alphabet to discover the hidden word.
Once there was a king. He was upset because thieves kept stealing costly jewels from his locker. Here is what the locker looked like:
The locker could be opened by giving its handle half a turn. Another half turn and the locker would be locked again.
- The king would often leave the locker open thinking it was locked. Can you guess the reason?
Which among the following pictures will look the same on half a turn?
Which of the following letters have both horizontal and vertical lines of symmetry?
The number of lines of symmetry in a 45° – 45° – 90° set-square is ______.
