Question

Determine length of an altitude of an equilateral triangle of side 2 cm

Answer 1

consider a median which makes a right angle triangle.
therefore:
by pythgoras theorem,
2^2 = 1^2 + x^2
4 = 1 + x^2
x^2 = 3
x = square root 3

Altitude of an equilateral triangle is = square root 3