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Ex 10.3, 3 - Chapter 10 Class 7 Practical Geometry
Last updated at Oct. 1, 2018 by Teachoo
Transcript
Ex 10.3, 3 Construct ∆ABC with BC = 7.5 cm, AC = 5 cm and m∠C = 60°. First we draw a rough sketch We follow these steps Steps of construction 1. Draw a line segment CB of length 7.5 cm 2. Now, we draw 60° from point C 3. Taking C as center, 5 cm as radius, we draw an arc Let the point where arc intersects the ray be point A 4. Join AB and label the sides Thus, Δ ABC is the required triangle
Constructing a triangle when 2 sides and angle between is known (SAS)
Chapter 10 Class 7 Practical Geometry
Concept wise
- Construction of line parallel to given line, through point not on line
- Constructing a triangle when 3 sides known (SSS)
- Constructing a triangle when 2 sides and angle between is known (SAS)
- Constructing a triangle when 2 angles and side between is known (ASA)
- Constructing a right triangle when hypotenuse and side is given (RHS)
About the Author
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.