NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 9: Symmetry and Practical Geometry

Fill in the Blanks

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).

The number of lines of symmetry in a picture of Taj Mahal is ____.

The number of lines of symmetry in a rectangle and a rhombus are _____ (equal/unequal).

The number of lines of symmetry in a rectangle and a square are _____ (equal/unequal).

If a line segment of length 5 cm is reflected in a line of symmetry (mirror), then its reflection (image) is a _____ of length _____.

If an angle of measure \(80^\circ\) is reflected in a line of symmetry, then the reflection is an _____ of measure _____.

The image of a point lying on a line \(l\) with respect to the line of symmetry \(l\) lies on _____.

In Fig. 9.10, 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 line segments PA and PB are _____.

The number of lines of symmetry in Fig. 9.11 is ____.

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 _____.

The digits having only two lines of symmetry are _____ and _____.

The digit having only one line of symmetry is ____.

The number of digits having no line of symmetry is ____.

The number of capital letters of the English alphabets having only vertical line of symmetry is ____.

The number of capital letters of the English alphabets having only horizontal line of symmetry is ____.

The number of capital letters of the English alphabets having both horizontal and vertical lines of symmetry is ____.

The number of capital letters of the English alphabets having no line of symmetry is ____.

The line of symmetry of a line segment is the _____ bisector of the line segment.

The number of lines of symmetry in a regular hexagon is ____.

The number of lines of symmetry in a regular polygon of \(n\) sides is ____.

A protractor has _____ line/lines of symmetry.

A \(30^\circ\)–\(60^\circ\)–\(90^\circ\) set-square has _____ line/lines of symmetry.

A \(45^\circ\)–\(45^\circ\)–\(90^\circ\) set-square has _____ line/lines of symmetry.

A rhombus is symmetrical about _____.

A rectangle is symmetrical about the lines joining the _____ of the opposite sides.