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Question 3 - Page 159 - Triangle Inequality & Construction of Circles - Chapter 7 Class 7 - A tale of three Intersecting Lines (Ganit Prakash)
Last updated at November 7, 2025 by Teachoo
Triangle Inequality & Construction of Circles
Class 7 (Ganita Prakash 1, 2 & old NCERT)
Chapter 7 Class 7 - A tale of three Intersecting Lines (Ganit Prakash)
- Definition
- Constructing Equilateral Triangle
- Constructing a Triangle when its Sides are given
- Figure it out - Page 150, 151
- Are Triangles Possible for any Lengths?
- Figure it out - Page 154
- Visualising the Construction of Circles
- Figure it out - Page 156
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Triangle Inequality & Construction of Circles
- Figure it out - Page 159
- Constructing Triangle when 2 Sides and the Included Angle are given
- Constructing Triangle when 2 Angles and the Included Side are given
- Do triangles always exist?
- Sum of angles of a triangle
- Angle Sum Property
- Exterior Angles
- Constructions Related to Altitudes of Triangles
- Figure it out - Page 170, 171
Transcript
Question 3 - Page 159 Frame a complete procedure that can be used to check the existence of a triangle. Here is a complete, step-by-step procedure: Given three lengths, identify the two shortest lengths and the one longest length. Add the two shortest lengths together. Compare this sum to the longest length: If the sum is GREATER THAN the longest length, a triangle EXISTS. If the sum is LESS THAN or EQUAL TO the longest length, a triangle DOES NOT EXIST
