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Multiple Altitudes in a Triangle
A triangle has three altitudes:
• From vertex A to BC
• From vertex B to AC
• From vertex C to AB
Diagram 2: Three Altitudes of a Triangle
Special Case: Altitude Outside the Triangle
In some triangles, the altitude may fall outside the triangle.
This happens when we extend the base and then draw the perpendicular.
Diagram 3: Altitude Outside Triangle And its Orthocentre.
Construction of Altitude Using Tools
Steps of Construction
1. Draw a triangle ABC and take BC as base
