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Construction of the Altitudes of a Triangle
Last updated at November 7, 2025 by Teachoo
Constructions Related to Altitudes of Triangles
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
- 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
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Constructions Related to Altitudes of Triangles
- Figure it out - Page 170, 171
Transcript
Construction of the Altitudes of a TriangleLet’s take any Triangle Let’s draw Altitude from point A i.e. we draw AD To draw AD, we need to set-squares and ruler Steps of construction 1. We align Ruler to our base BC 2. We put our set-square on top of our ruler – aligning its edges 3. We slide our set-square over the ruler till the vertical edge of the set square touches the vertex A 4. From point A, we draw the line over the vertical edge of our set-square till it reaches BC. We mark 90° and point D as point touching altitude from and BC Thus, AD is our required altitude
