Extra Questions for Class 6 Maths revision becomes an easy task during the annual exam. Students who find it challenging to understand the basics of the chapter must practice all the essential questions to understand better. These crucial questions and answers on Knowing Our Numbers Class 6 Maths can aid the students’ preparation through the concepts of this chapter 1. https://meritbatch.com/knowing-our-numbers-class-6-extra-questions/
NCERT Class 6 Maths Chapter 14 Extra Questions and Answers
Extra Questions for Class 6 Maths Chapter 14 Practical Geometry
Practical Geometry Class 6 Extra Questions Very Short Answer Type
Practical Geometry Class 6 Extra Questions Question 1.
If AB = 3.6 and CD = 1.6 cm, construct a line segment equal to \(\overline { AB }\) + \(\overline { CD }\) and measure the total length.
Solution:
Step I: Draw a ray OX.
Step II : With centre 0 and radius equal to the length of AB (3.6 cm) mark a point P on the ray.
Step III: With centre P and radius equal to the length of CD (1.6 cm) mark another point Q on the ray.
Thus OQ is the required segment such that OQ = 3.6 cm + 1.6 cm = 5.2 cm.
Class 6 Practical Geometry Extra Questions Question 2.
Construct a perpendicular to a given line segment at point on it.
Solution:
Step IDraw a line \(\overleftrightarrow { PQ }\) and take any point A on it.
Step II : With centre A draw an arc which meets PQ at C and D.
Step III : Join AB and produce.
Step IV: With centres C and D and radius equal to half of the length of the previous arc, draw two arcs which meets each other at B.
Thus AB is the required perpendicular to \(\overleftrightarrow { PQ }\).
Question 3.
Construct an angle of 60° and bisect it.
Solution:
Step I: Draw a line segment \(\overline { AB }\).
Step II: With centre B and proper radius, draw an arc which meets AB at C.
Step III : With C as centre and the same radius as in step II, draw an arc cutting the previous arc at D.
Step IV : Join B to D and produce.
Step V : Draw the bisector BE of ∠ABD.
Thus BE is the required bisector of ∠ABD.
Practical Geometry Class 6 Worksheets With Answers Question 4.
Draw an angle of 120° and hence construct an angle of 105°.
Solution:
Step I : Draw a line segment \(\overline { OA }\).
Step II : With centre O and proper radius, draw an arc which meets OA at C.
Step III : With centre C and radius same, mark D and E on the previous arc.
Step IV : Join O to E and produce.
Step V : ∠EOA is the required angle of 120°.
Step VI : Construct an angle of 90° which meets the previous arc at F.
Step VII : With centre E and F and proper radius, draw two arcs which meet each other at G.
Step VIII : Join OG and produce.
Thus ∠GOA is the required angle of 105°.
Practical Geometry Class 6 Questions And Answers Question 5.
Using compasses and ruler, draw an angle of
75° and hence construct an angle of 37 \(\frac { { 1 }^{ \circ } }{ 2 }\).
Solution:
Step I: Draw a line segment OA.
Step II : Construct ∠BOA = 90° and ∠EOA = 60°
Step III : Draw OC as the bisector of ∠BOE , which equal to
Step IV : Draw the bisector OD of ∠COA.
Thus ∠DOA is the required angle of 37 \(\frac { { 1 }^{ \circ } }{ 2 }\) .
Extra Questions On Practical Geometry For Class 6 Question 6.
Draw ∆ABC. Draw perpendiculars from A, B and C respectively on the sides BC, CA and AB. Are there perpendicular concurrent? (passing through the same points).
Solution:
Step I: Draw any ∆ABC.
Step II : Draw the perpendicular AD from A to BC.
Step III : Draw the perpendicular BE from B to AC.
Step IV : Draw the perpendicular CF from C to AB.
We observe that the perpendiculars AD, BE and CF intersect each other at P.
Thus, P is the point of intersection of the three perpendiculars.
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