• Skip to main content
  • Skip to secondary menu
  • Skip to primary sidebar
  • Skip to footer
  • RBSE Model Papers
    • RBSE Class 12th Board Model Papers 2022
    • RBSE Class 10th Board Model Papers 2022
    • RBSE Class 8th Board Model Papers 2022
    • RBSE Class 5th Board Model Papers 2022
  • RBSE Books
  • RBSE Solutions for Class 10
    • RBSE Solutions for Class 10 Maths
    • RBSE Solutions for Class 10 Science
    • RBSE Solutions for Class 10 Social Science
    • RBSE Solutions for Class 10 English First Flight & Footprints without Feet
    • RBSE Solutions for Class 10 Hindi
    • RBSE Solutions for Class 10 Sanskrit
    • RBSE Solutions for Class 10 Rajasthan Adhyayan
    • RBSE Solutions for Class 10 Physical Education
  • RBSE Solutions for Class 9
    • RBSE Solutions for Class 9 Maths
    • RBSE Solutions for Class 9 Science
    • RBSE Solutions for Class 9 Social Science
    • RBSE Solutions for Class 9 English
    • RBSE Solutions for Class 9 Hindi
    • RBSE Solutions for Class 9 Sanskrit
    • RBSE Solutions for Class 9 Rajasthan Adhyayan
    • RBSE Solutions for Class 9 Physical Education
    • RBSE Solutions for Class 9 Information Technology
  • RBSE Solutions for Class 8
    • RBSE Solutions for Class 8 Maths
    • RBSE Solutions for Class 8 Science
    • RBSE Solutions for Class 8 Social Science
    • RBSE Solutions for Class 8 English
    • RBSE Solutions for Class 8 Hindi
    • RBSE Solutions for Class 8 Sanskrit
    • RBSE Solutions

RBSE Solutions

Rajasthan Board Textbook Solutions for Class 5, 6, 7, 8, 9, 10, 11 and 12

  • RBSE Solutions for Class 7
    • RBSE Solutions for Class 7 Maths
    • RBSE Solutions for Class 7 Science
    • RBSE Solutions for Class 7 Social Science
    • RBSE Solutions for Class 7 English
    • RBSE Solutions for Class 7 Hindi
    • RBSE Solutions for Class 7 Sanskrit
  • RBSE Solutions for Class 6
    • RBSE Solutions for Class 6 Maths
    • RBSE Solutions for Class 6 Science
    • RBSE Solutions for Class 6 Social Science
    • RBSE Solutions for Class 6 English
    • RBSE Solutions for Class 6 Hindi
    • RBSE Solutions for Class 6 Sanskrit
  • RBSE Solutions for Class 5
    • RBSE Solutions for Class 5 Maths
    • RBSE Solutions for Class 5 Environmental Studies
    • RBSE Solutions for Class 5 English
    • RBSE Solutions for Class 5 Hindi
  • RBSE Solutions Class 12
    • RBSE Solutions for Class 12 Maths
    • RBSE Solutions for Class 12 Physics
    • RBSE Solutions for Class 12 Chemistry
    • RBSE Solutions for Class 12 Biology
    • RBSE Solutions for Class 12 English
    • RBSE Solutions for Class 12 Hindi
    • RBSE Solutions for Class 12 Sanskrit
  • RBSE Class 11

RBSE Solutions for Class 7 Maths Chapter 8 Triangle and its Properties Ex 8.2

March 25, 2019 by Fazal Leave a Comment

   

RBSE Solutions for Class 7 Maths Chapter 8 Triangle and its Properties Ex 8.2 is part of RBSE Solutions for Class 7 Maths. Here we have given Rajasthan Board RBSE Class 7 Maths Chapter 8 Triangle and its Properties Exercise 8.2.

Board RBSE
Textbook SIERT, Rajasthan
Class Class 7
Subject Maths
Chapter Chapter 8
Chapter Name Triangle and its Properties
Exercise Ex 8.2
Number of Questions 7
Category RBSE Solutions

Rajasthan Board RBSE Class 7 Maths Chapter 8 Triangle and its Properties Ex 8.2

Question 1
Which of the following (RBSESolutions.com) triads form a triangle :
(i) 6, 5, 5,
(ii) 2, 3, 5
(iii)3, 4, 8
(iv) 3, 5, 6
(v) 4, 4, 8,
(vi) 9, 2, 8
Solution:
(i) The sum of any two sides should (RBSESolutions.com) be greater than the third side.
∵ 6 + 5 = 11 ≥ 5
∴ Given sides construct a triangle.

(ii) The sum of any two sides should be greater than the third side.
∵ 2 + 3 ⊁ 5
∴ Given sides do not construct a triangle.

(iii) The sum of any two sides should be greater than the third side.
∵ 3 + 4 < 8
∴ Given sides construct a triangle.

(iv) The sum of any two sides (RBSESolutions.com) should be greater than the third side.
∵ 3 + 5 > 6
∴ Given sides construct a triangle.

(v) The sum of any two sides should be greater than the third side.
∵ 4 + 4 ⊁ 8
∴ Given sides do not construct a triangle.

(vi) The sum of any two sides should be greater than the third side.
∵ 8 + 2 > 9
∴ Given sides construct a triangle.

RBSE Solutions

Question 2
Find the value of all (RBSESolutions.com) angles of an equilateral triangle.
Solution:
The equilateral triangle has equal angles.
∴ x° + x0 + ;c°= 180°
⇒ 3x° = 180°
⇒ x° = \(\frac { 180 }{ 3 }\) = 60°
∴ All angles of an equilateral triangle are 60°, 60°, 60°.

Question 3
Fill in the blanks :
(i) At least two angles (RBSESolutions.com) in a triangle are ………… .
(ii) One altitude of an ……………. triangle lies outside the triangle.
(iii) Sum of any two sides of a triangle is …………. than the thrid side.
(iv) Two angles of an ……….. triangles are equal.
(v) The line joining the vertex to the middle point of opposite side of a triangle is called …….. .
(vi) The point where three medians of a triangle meet is called ………… .
(vii) All three ………… of a triangle pass (RBSESolutions.com) through the orthocentre of a triangle.
Solution:
(i) Acute angle
(ii) Obtuse angle
(iii) greater
(iv) isosceles triangle
(v) median
(vi) centroid
(vii) altitudes

Question 4
In ∆ABC, ∠A = 70° and AB = AC. Find the value of B and C.
Solution:
When two sides AB and AC are equal, then (RBSESolutions.com) their opposite angles ∠B and ∠C will also be equal.
RBSE Solutions for Class 7 Maths Chapter 8 Triangle and its Properties Ex 8.2
∵∠A = 70°
∵ Sum of all three (RBSESolutions.com) angles in a triangle = 180°
∠A+∠B +∠C = 180°
⇒ 70° + ∠B +∠B = 180° [∵ ∠B = ∠c]
⇒ 2∠B = 180° – 70° = 110°
∴ ∠B = \(\frac { { 110 }^{ 0 } }{ 2 }\) = 55° =∠C

Question 5
Construct a triangle and show in it one median and one altitude.
Solution:
In figure ∆ABC is a triangle.
∵ The line joining any vertex to (RBSESolutions.com) the mid point of its opposite side is called a median. Here D is mid point of side BC.
RBSE Solutions for Class 7 Maths Chapter 8 Triangle and its Properties Ex 8.2
∴ AD is a median.
Also a perpendicular draw from (RBSESolutions.com) a vertex to its opposite side, is called an altitude
∵ ∠BEC = ∠BEA = 90°
∴ BE is an altitude.

RBSE Solutions

Question 6
The length of two sides of a triangle are 3 cm and 6 cm. What could be the (RBSESolutions.com) minimum and maximum value of its third side?
Solution:
Minimum measure of third side may be = 6 – 3 = 3
and Maximum measure may be = 6 + 3 = 9
Therefore third side will be greater than 3 or less than 9.
Thus we can say the third side may be either 4, 5, 6, 7 or 8 cm.

Question 7
Draw two equilateral triangular traffic symbols (warning symbols) that (RBSESolutions.com) attracts your attention towards possible danger on the road.
Solution:
RBSE Solutions for Class 7 Maths Chapter 8 Triangle and its Properties Ex 8.2
(i) School ahead
RBSE Solutions for Class 7 Maths Chapter 8 Triangle and its Properties Ex 8.2
(ii) Speed Breaker

We hope the RBSE Solutions for Class 7 Maths Chapter 8 Triangle and its Properties Ex 8.2 will help you. If you have any query regarding Rajasthan Board RBSE Class 7 Maths Chapter 8 Triangle and its Properties Exercise 8.2, drop a comment below and we will get back to you at the earliest.

Share this:

  • Click to share on WhatsApp (Opens in new window)
  • Click to share on Twitter (Opens in new window)
  • Click to share on Facebook (Opens in new window)

Related

Filed Under: Class 7

Reader Interactions

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Primary Sidebar

Recent Posts

  • RBSE Solutions for Class 7 Our Rajasthan in Hindi Medium & English Medium
  • RBSE Solutions for Class 6 Our Rajasthan in Hindi Medium & English Medium
  • RBSE Solutions for Class 7 Maths Chapter 15 Comparison of Quantities In Text Exercise
  • RBSE Solutions for Class 6 Maths Chapter 6 Decimal Numbers Additional Questions
  • RBSE Solutions for Class 11 Psychology in Hindi Medium & English Medium
  • RBSE Solutions for Class 11 Geography in Hindi Medium & English Medium
  • RBSE Solutions for Class 3 Hindi
  • RBSE Solutions for Class 3 English Let’s Learn English
  • RBSE Solutions for Class 3 EVS पर्यावरण अध्ययन अपना परिवेश in Hindi Medium & English Medium
  • RBSE Solutions for Class 3 Maths in Hindi Medium & English Medium
  • RBSE Solutions for Class 3 in Hindi Medium & English Medium

Footer

RBSE Solutions for Class 12
RBSE Solutions for Class 11
RBSE Solutions for Class 10
RBSE Solutions for Class 9
RBSE Solutions for Class 8
RBSE Solutions for Class 7
RBSE Solutions for Class 6
RBSE Solutions for Class 5
RBSE Solutions for Class 12 Maths
RBSE Solutions for Class 11 Maths
RBSE Solutions for Class 10 Maths
RBSE Solutions for Class 9 Maths
RBSE Solutions for Class 8 Maths
RBSE Solutions for Class 7 Maths
RBSE Solutions for Class 6 Maths
RBSE Solutions for Class 5 Maths
RBSE Class 11 Political Science Notes
RBSE Class 11 Geography Notes
RBSE Class 11 History Notes

Copyright © 2023 RBSE Solutions

 

Loading Comments...