Question

All ___ triangles are always similar.

• A. equilateral
• B. isosceles
• C. scalene
• D. right angled

Answer 1

The correct option is A

equilateral

All equilateral triangles have each angle as ${60}^{\circ }$ so they are always similar by A.A. or A.A.A. similarity condition.

If two angles of one traingle are equal to corresponding two angles of other traingle ,then by A.A criteria both of the trangles are similar.