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Constructing a Triangle when all 3 sides are known (SSS)
Last updated at March 30, 2023 by Teachoo
Constructing a triangle when 3 sides known (SSS)
Chapter 10 Class 7 Practical Geometry
Concept wise
- Construction of line parallel to given line, through point not on line
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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)
Transcript
Constructing a Triangle when all 3 sides are known (SSS) Let’s take an example Draw a triangle with lengths 3 cm, 4 cm, 5 cm First we draw a rough sketch We follow these steps Steps of construction 1. Draw a line segment BC of length 5 cm 2. Since length of AB is 4 cm, we measure 4 cm using ruler and compass 3. Now, putting pointed end on point B and compass opened the same length, we draw an arc 4. Since length of AC is 3 cm, we measure 3 cm using ruler and compass 5. Now, putting pointed end on point C and compass opened the same length, we draw an arc 6. Where the arcs intersect, mark it as point A Join AB and AC and label the sides Thus, Δ ABC is the required triangle
