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Constructing Triangle when 2 Sides and the Included Angle are given
Last updated at November 7, 2025 by Teachoo
Constructing Triangle when 2 Sides and the Included Angle are given
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
- Triangle Inequality & Construction of Circles
- Figure it out - Page 159
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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
Constructing Triangle when 2 Sides and the Included Angle are givenWhen we say two sides and an included angle are given, we mean Two sides of triangle And, angle between these sides is given Example Let’s do a question Construct a triangle ABC with AB = 5 cm, AC = 4 cm and ÐA= 45°. First, we draw a rough figure We take longer side as base ∴ AB is base Now, let’s construct it Steps of construction 1. Draw a line segment AB of length 5 cm 2. Now, using protractor, we draw 45° from point A 3. Since AC = 4 cm. Taking C as center, 4 cm as radius, we draw an arc Let the point where arc intersects the ray be point C 4. Join BC and label the sides Thus, Δ ABC is the required triangle
