NCERT Class 7 Maths Chapter 10 Practical Geometry Exercise 10.2

Chapter 10 Practical Geometry Exercise 10.2

Question 1: Construct ΔXYZ in which XY = 4.5 cm, YZ = 5 cm and ZX = 6 cm
Answer:

Rough Figure

Actual Figure

Steps of Construction
1. Draw YZ = 5cm.
2. Take Y as a centre, 4.5 cm as a radius draw an arc.
3. Take Z as a centre, 6 cm as a radius draw another arc and it intersects the previous arc at X.
4. Join XY.
5. Join XZ.
6.   ⃤  XYZ is our required triangle.

Question 2: Construct an equilateral triangle of side 5.5 cm.
Answer:
Rough Figure

(Property used - In an equilateral triangle all the sides are equal.)

Actual figure

 

Steps of Construction
1. Draw BC = 5.5 cm.
2. Take B as a centre, 5.5 cm as a radius draw an arc.
3. Take C as a centre, 5.5 cm as a radius draw another arc and it intersects the previous arc at A.
4. Join BA.
5. Join CA.
6.   ⃤  ABC is our required triangle.

Question 3: Draw ΔPQR with PQ = 4 cm, QR = 3.5 cm and PR = 4 cm. What type of triangle is this?
Answer:

Rough Figure

Actual figure

Steps of Construction
1. Draw QR = 3.5 cm.
2. Take Q as a centre, 4 cm as a radius draw an arc.
3. Take R as a centre, 4 cm as a radius draw another arc and it intersects the previous arc at P.
4. Join PQ.
5. Join PR.
6.   ⃤  PQR is our required triangle.

Question 4: Construct ΔABC such that AB = 2.5 cm, BC = 6 cm and AC = 6.5 cm. Measure ∠B.
Answer:

Rough figure

Actual figure

Steps of Construction
1. Draw AC = 6.5 cm.
2. Take A as a centre, 2.5 cm as a radius draw an arc.
3. Take C as a centre, 6 cm as a radius draw another arc and it intersects the previous arc at B.
4. Join AB.
5. Join CB.
6.   ⃤  ABC is our required triangle.

No comments:

Post a Comment

Also read!

Click on any of the below text for additional links:

Class 6

Class 6 Computer Kips Solutions
Class 6 Gul Mohar English Solutions
→ Class 6 Map Pointing Solutions
Class 6 NCERT Civics Solutions
Class 6 NCERT Geography Solutions
Class 6 NCERT History Solutions
Class 6 NCERT Maths Solutions
Class 6 NCERT Science Solutions

Class 7

Class 7 Computer Kips Solutions
Class 7 Gul Mohar English Solutions
English Grammar Class 7
English Writing Skills Class 7
Class 7 Map Pointing Solutions
Class 7 NCERT Civics Solutions
Class 7 NCERT Civics Notes
Class 7 NCERT Civics Extra Questions
Class 7 NCERT Geography Solutions
Class 7 NCERT Geography Notes
Class 7 NCERT Geography Extra Questions
Class 7 NCERT History Solutions
Class 7 NCERT History Notes
Class 7 NCERT History Extra Questions
Class 7 NCERT Maths Solutions
Class 7 NCERT Science Solutions
Class 7 NCERT Science Notes
Class 7 NCERT Science Extra Questions

Class 8

Class 8 Kips Artificial Intelligence Solutions
Class 8 Gul Mohar English Solutions
English Grammar Class 8
English Writing Skills Class 8
Class 8 Map Pointing Solutions
Class 8 NCERT Civics Solutions
Class 8 NCERT Civics Notes
Class 8 NCERT Civics Extra Questions
Class 8 NCERT Geography Solutions
Class 8 NCERT Geography Notes
Class 8 NCERT Geography Extra Questions
Class 8 NCERT History Solutions
Class 8 NCERT History Notes
Class 8 NCERT History Extra Questions
Class 8 NCERT Maths Solutions
Class 8 NCERT Science Solutions
Class 8 NCERT Science Notes
Class 8 NCERT Science Extra Questions
Class 8 NCERT Science Exemplar
Class 8 NCERT Science MCQs

Class 9

Class 9 Kips Artificial Intelligence Solutions
Class 9 Map Pointing Solutions
Class 9 NCERT Civics Solutions
Class 9 NCERT Geography Solutions
Class 9 NCERT History Solutions
Class 9 NCERT Maths Solutions
Class 9 NCERT Science Solutions

Class 10

Class 10 Kips Artificial Intelligence Solutions
Class 10 NCERT English Solutions
→ Class 10 Map Pointing Solutions
Class 10 NCERT Civics Solutions
Class 10 NCERT Civics Notes
Class 10 NCERT Civics Extra Questions
Class 10 NCERT Geography Solutions
Class 10 NCERT Geography Notes
Class 10 NCERT Geography Extra Questions
Class 10 NCERT History Solutions
→ Class 10 NCERT History Notes
Class 10 NCERT History Extra Questions
Class 10 NCERT Maths Solutions
Class 10 NCERT Science Solutions
Class 10 NCERT Science Notes
Class 10 NCERT Science Extra Questions

Computer Languages

Python Basics

Extra Activities

Extra Activities

Extra Knowledge

Extra Information
General Knowledge
Historical Places in India
Latest technology
Physical Sciences
Facts

• Mathematics quick links
Mathematical Terms
Maths Tricks

Home Top