Perpendicular bisector of a line segment and steps to be followed in their construction using compass and ruler are explained in a simple way under exercise 14.5. The steps in construction of line segment are discussed in an interactive manner with the aim of making it easily understandable for the students. To gain expertise in these concepts and score well in the exam, students can refer NCERT Solutions Class 6 Maths Chapter 14 Practical Geometry Exercise 14.5 PDF, which are provided below.

## NCERT Solutions for Class 6 Chapter 14: Practical Geometry Exercise 14.5 Download PDF

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### Access NCERT Solutions for Class 6 Chapter 14: Practical Geometry Exercise 14.5

**1. Draw **** of length 7.3 cm and find its axis of symmetry.**

**Solutions:**

Following steps are followed to construct** **** **of length 7.3 cm and to find its axis of symmetry

(1) Draw a line segment

of 7.3 cm

(2) Take A as centre and draw a circle by using compasses. The radius of circle should be more than half the length of

.

(3) Now, take B as centre and draw another circle using compasses with the same radius as before. Let it cut the previous circle at points C and D

(4) Join CD. Now

is the axis of symmetry

**2. Draw a line segment of length 9.5 cm and construct its perpendicular bisector.**

**Solutions:**

Following** **steps are observed to construct a line segment of length 9.5 cm and to construct its perpendicular bisector

(1) Draw a line segment

of 9.5 cm

** **

(2) Take point P as centre and draw a circle by using compasses. The radius of circle should be more than half the length of

(3) Taking the centre at point Q, again draw another circle using compasses with the same radius as before. Let it cut the previous circle at R and S respectively.

(4) Join RS. Now,

is the axis of symmetry i.e the perpendicular bisector of the line

** **

**3. Draw the perpendicular bisector of whose length is 10.3 cm.**

**(a) Take any point P on the bisector drawn. Examine whether PX = PY. **

**(b) If M is the mid point of , what can you say about the lengths MX and XY? **

**Solutions:**

**(1) **Draw a line segment

of 10.3 cm

(2) Take point X as centre and draw a circle by using compasses. The radius of circle should be more than half the length of

(3) Now taking Y as centre, draw another circle using compasses with the same radius as before. Let it cut at previous circle at points A and B

(4) Join AB. Here

is the axis of symmetry

** **

(a) Take any point P on

. We may observe that the measure of lengths of PX and PY are same

being the axis of symmetry, any point lying on

will be at same distance from the both ends of

(b) M is the midpoint of

. Perpendicular bisector

will be passing through point M. Hence length of

is double of

or 2MX = XY.

**4. Draw a line segment of length 12.8 cm. Using compasses, divide it into four equal parts. Verify by actual measurement.**

**Solutions:**

**(1) **Draw a line segment

of 12.8 cm

(2) By taking point X as centre and radius more than half of XY, draw a circle.

(3) Again with same radius and centre as Y, draw two arcs to cut the circle at points A and B. Join AB which intersects

at point M

(4) By taking X and Y as centres, draw two circles with radius more than half of

(5) Taking M as centre and with same radius, draw two arcs to intersect these circles at P, Q and R, S

(6) Join PQ, and RS. These are intersecting

at points T and U.

(7) The 4 equal parts of

are

=

=

=

BY measuring these line segments with the help of a ruler, we may observe that each is of 3.2 cm

**5. With of length 6.1 cm as diameter, draw a circle.**

**Solutions:**

**(1) **Draw a line segment

of 6.1 cm

(2) Take point P as centre and radius more than half of

, draw a circle

** **

(3) Again with same radius and Q as centre, draw two arcs intersecting the circle at points R and S

(4) Join RS which intersects

at T.

(5) Taking the centre as T and radius TP, draw a circle which passes through Q. Now, this is the required circle.

**6. Draw a circle with centre C and radius 3.4 cm. Draw any chord . Construct the perpendicular bisector of and examine if it passes through C.**

**Solutions:**

**(1) **Mark any point C on the sheet

(2) Adjust the compasses up to 3.4 cm and by putting the pointer of compasses at point C, turn compasses slowly to draw the circle. This is the required circle of 3.4 cm radius.

(3) Mark any chord

in the circle

(4) Now, taking A and B as centres, draw arcs on both sides of

. Let these intersect each other at points D and E.

(5) Join DE. Now DE is the perpendicular bisector of AB.

If

is extended, it will pass through point C.

**7. Repeat Question 6, if happens to be a diameter.**

**Solutions:**

**(1) **Mark any point C on the sheet.

(2) Adjust the compasses up to 3.4 cm and by putting the pointer of compasses at point C, Turn the compasses slowly to draw the circle. This is the required circle of 3.4 cm

(3) Now mark any diameter

in the circle.

(4) Now taking A and B as centres, draw arcs on both sides of

with radius more than

. Let these intersect each other at points D and E.

(5) Join DE, which is perpendicular bisector of AB.

Now, we may observe that

is passing through the centre C of the circle.

**8. Draw a circle of radius 4 cm. Draw any two of its chords. Construct the perpendicular bisectors of these chords. Where do they meet?**

**Solutions:**

(1) Mark any point C on the sheet. Now adjust the compasses up to 4 cm and by placing the pointer of compasses at point C, turn the compasses slowly to draw the circle. This is the required circle of 4 cm radius

(2) Take any two chords

and

in the circle

(3) By taking A and B as centres and radius more than half of

, draw arcs on both sides of AB. The arcs are intersecting each other at point E and F. Join EF which is perpendicular bisector of AB.

(4) Again take C and D as centres and radius more than half of

, draw arcs on both sides of CD such that they are intersecting each other at points G, H. Join GH which is perpendicular bisector of CD

We may observe that when EF and GH are extended they meet at the point O, which is the centre of circle

**9. Draw any angle with vertex O. Take a point A on one of its arms and B on another such that OA = OB. Draw the perpendicular bisectors of and . Let them meet at P. Is PA = PB?**

**Solutions:**

**(1) **Draw any angle with vertex as O.

(2) By taking O as centre and with convenient radius, draw arcs on both rays of this angle. Let these points are A and B

(3) Now take O and A as centres and with radius more than half of OA, draw arcs on both sides of OA. Let these intersects at points C and D respectively. Join CD

(4) Similarly we may find

which is perpendicular bisector of

. These perpendicular bisectors

and

intersects each other at point P. Now measure PA and PB. They are equal in length.