ID : in-7-symmetry [1] Class 7 Symmetry For more such worksheets visit www.edugain.com Answer the questions (1) Find the order of rotational symmetry in the given image. (2) How many lines of symmetry are there in the given figure? (3) Find the order of rotational symmetry in the given image. (4) What is the order of rotational symmetry in the given image? (5) How many lines of symmetry does a circle have? (6) How many lines of symmetry are there in the given figure? (7) Alisha rolls a cube in which the letters F, V, I, J, C and U appear on faces 1, 2, 3, 4, 5,and 6, respectively. What is the fraction of symmetric letters (either horizontal or vertical) on the cube?
(8) Find the order of rotational symmetry in the given image. ID : in-7-symmetry [2] (9) How many lines of symmetry are there in the given figure? (10) How many lines of symmetry are there in the given figure? (11) Find the order of rotational symmetry in the given image. (12) Find the order of rotational symmetry in the given image. (13) Find the order of symmetry in the given figure. Choose correct answer(s) from the given choices (14) Which of the following letters has a vertical line of symmetry? a. E b. W c. S d. N
(15) Which of the following pairs show a perfect reflection over the line? a. b. ID : in-7-symmetry [3] c. d. 2017 Edugain (www.edugain.com). All Rights Reserved Many more such worksheets can be generated at www.edugain.com
Answers ID : in-7-symmetry [4] (1) 3 A shape has Rotational Symmetry if it still looks the same after a rotation. If we look at the image carefully, we notice that the given image still looks the same after 3 Hence, the order of rotational symmetry in the given image is 3. (2) 1 We know that the lines which divide any image into two pieces such that the two become mirror images of each other are called lines of symmetry. All the possible lines of symmetry of the given figure are shown below : Step 3 Hence, we can say that the given figure has 1 lines of symmetry.
(3) 6 ID : in-7-symmetry [5] A figure has Rotational Symmetry if it still looks the same after a rotation. If we look at the image carefully, we notice that the given image still looks the same after 6 Hence, the order of rotational symmetry in the given image is 6. (4) Two A shape has Rotational Symmetry if it still looks the same after a rotation. The order of rotational symmetry is the number of times the image comes back to the original image after taking a complete turn. If we look at the image carefully, we notice that the given image still looks the same in two Therefore, the order of rotational symmetry in the given image is Two.
(5) Infinite ID : in-7-symmetry [6] The lines which divide any image into two parts in such a manner that the two parts become mirror images of each other are called lines of symmetry. The lines of symmetry for a circle are shown in the figure below. Hence, a circle has Infinite lines of symmetry. (6) 1 We know that the lines which divide any image into two pieces such that the two become mirror images of each other are called lines of symmetry. For example : the line in the given triangle is the line of symmetry. Now, if we look at the given figure carefully, we notice that the number of lines of symmetry are 1.
ID : in-7-symmetry [7] (7) 4 6 Symmetric letters are C, I, U and V. Asymmetric letters are F and J. Step 3 Total symmetric and asymmetric letters are 6. Step 4 Now, the fraction of symmetric letters (either horizontal or vertical) on the cube is 4 6. (8) 2 A figure has Rotational Symmetry if it still looks the same after a rotation. If we look at the image carefully, we notice that the given image still looks the same after 2 Hence, the order of rotational symmetry in the given image is 2.
(9) 1 ID : in-7-symmetry [8] We know that the lines which divide any image into two pieces such that the two become mirror images of each other are called lines of symmetry. All the possible lines of symmetry of the given figure are shown below : Step 3 Hence, we can say that the the given figure has 1 lines of symmetry. (10) 1 We know that the lines which divide any image into two pieces such that the two become mirror images of each other are called lines of symmetry. All the possible lines of symmetry of the given figure are shown below : Step 3 Hence, we can say that the the given figure has 1 lines of symmetry.
(11) 7 ID : in-7-symmetry [9] A figure has Rotational Symmetry if it still looks the same after a rotation. If we look at the image carefully, we notice that the given image still looks the same after 7 Hence, the order of rotational symmetry in the given image is 7. (12) 2 A shape has Rotational Symmetry if it still looks the same after a rotation. The order of rotational symmetry is the number of times the image comes back to the original image after taking a complete turn. If we look at the image carefully, we notice that the given image still looks the same after 2 Hence, the order of rotational symmetry in the given image is 2.
(13) 3 ID : in-7-symmetry [10] A shape has Rotational Symmetry if it still looks the same after a rotation. The order of rotational symmetry is the number of times the image comes back to the original image after taking a complete turn. If we look at the image carefully, we notice that the given image still looks the same after 3 Hence, the order of rotational symmetry in the given image is 3. (14) b. W If we draw a vertical line down the middle of a letter such that the two sides become the mirror images of each other, then we can say that the letter has a vertical line of symmetry. Now, if we look at all the options carefully, we notice that if we draw a vertical line down the middle of the letter W, the two sides will be mirror images of each other. Hence, we can say that the letter W has a vertical line of symmetry.
(15) c. ID : in-7-symmetry [11] We know that a perfect reflection is a flip over the line such that the object distance from the line is same as the image distance from the line and the size of the image is equal to the size of the object. Now, if we look at the all the options carefully, we will notice that the pair which shows such a reflection over the line is:. Step 3 Hence, option c is the correct answer.