Draw an equilateral triangle of sides \(6.5 \ cm\) and locate its Orthocentre.
 
Solution:
 
Each side of equilateral triangle is
 
Step 1:
 
Step 2 :
 
The point of intersection of the
\(H\) is the orthocentre of the triangle \(PQR\).
Answer variants:
altitude
Construct the atltitudes from any two vertices (say) \(R\) and \(P\), to their opposite sides \(PQ\) and \(QR\), respectively.
Draw the equilateral triangle \(PQR\) with each side \(6.5 \ cm\).
\(6.5\ cm\)