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Chapter 1: Knowing Our Numbers5 Topics2 Quizzes
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Chapter 2: Whole Numbers5 Topics
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Chapter 3: Playing With Numbers8 Topics
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Chapter 4: Integers5 Topics
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Chapter 5: Fractions6 Topics
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Chapter 6: Decimals11 Topics
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Chapter 7: Algebra3 Topics
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Chapter 8: Ratio, Proportion and Unitary Method3 Topics
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Chapter 9: Understanding Elementary Shapes2 Topics
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Chapter 10: Basic Geometrical Ideas7 Topics
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Chapter 11: Mensuration8 Topics
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Chapter 12: Symmetry2 Topics
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Chapter 13: Data Handling3 Topics
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Chapter 14: Practical Geometry5 Topics
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NCERT AND EXEMPLAR
Number System1 Topic -
Geometry1 Topic
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Integers1 Topic
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Fractions & Decimals1 Topic
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Data Handling1 Topic
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Mensuration1 Topic
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Algebra1 Topic
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Ratio & Proportion1 Topic
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Symmetry & Practical Geometry1 Topic
Q.1 The distance of the image of a point (or an object) from the line of symmetry (mirror) is ________ as that of the point (object) from the line (mirror).
Ans.
The distance of the image of a point (or an object) from the line of symmetry (mirror) is the same as that of the point (object) from the line (mirror).
Q.2 The number of lines of symmetry in a picture of the Taj Mahal is _______.
Ans.
The number of lines of symmetry in a picture of the Taj Mahal is one.
Q.3 The number of lines of symmetry in a rectangle and a rhombus are ______ (equal/unequal).
Ans.
The number of lines of symmetry in a rectangle and a rhombus are equal.
Q.4 The number of lines of symmetry in a rectangle and a square are______ (equal/unequal).
Ans.
The number of lines of symmetry in a rectangle and a square are unequal.
Q.5 If a line segment of length 5cm is reflected in a line of symmetry (mirror), then its reflection (image) is a ______ of length _______.
Ans.
If a line segment of length 5cm is reflected in a line of symmetry (mirror), then its reflection (image) is a line segment of length 5cm.
Q.6 If an angle of measure 80o is reflected in a line of symmetry, then the reflection is an ______ of measure _______.
Ans.
If an angle of measure 80o is reflected in a line of symmetry, then the reflection is an angle of measure 80o.
Q.7 The image of a point lying on a line l with respect to the line of symmetry l lies on _______.
Ans.
The image of a point lying on a line l with respect to the line of symmetry l lies on line l.
Q.8 In Fig. 9.10, if B is the image of point A with respect to the line l and P is any point lying on l, then the lengths of line segments PA and PB are _______.
Ans.
In Fig. 9.10, if B is the image of point A with respect to line l and P is any point lying on l, then the lengths of line segments PA and PB are equal.
Q.9 The number of lines of symmetry in Fig. 9.11 is__________.
Ans.
The number of lines of symmetry in Fig. 9.11 is 5.
Q.10 The common properties in the two set-squares of a geometry box are that they have a __________ angle and they are of the shape of a __________.
Ans.
The common properties in the two set-squares of a geometry box are that they have a right angle and they are of the shape of a triangle.
Q.12 The digits having only two lines of symmetry are_________ and __________.
Ans.
The digits having only two lines of symmetry are 0 and 8.
Q.13 The digit having only one line of symmetry is __________.
Ans.
The digit having only one line of symmetry is 3.
Q.14 The number of digits having no line of symmetry is_________.
Ans.
The number of digits having no line of symmetry is 7.
The digits having no line of symmetry are 1, 2, 4, 5, 6, 7 and 9
