geometry
posted by Randy .
The altitude of an equilateral triangle is 7 square root 3 units long. The length of one side of the triangle is ____ units.
7
14
14 square root 3
7 square root 3 over 2

Draw your right triangle. A standard 306090 has legs in the ratio of height:base = √3:1
Your altitude is 7√3 so the other leg is 7.
The side of the triangle is twice the base, so 14. 
The altitude of an equilateral triangle is 7 units long. The length of one side of the triangle is ____ units.