1956 AMC 12 Question 26
AMC12 · 1956 AMC 12
Which one of the following combinations of given parts does not determine the indicated triangle?
base angle and vertex angle; isosceles
triangle
vertex angle and the base; isosceles triangle
the radius of the circumscribed circle; equilateral
triangle
one arm and the radius of the inscribed circle; right
triangle
two angles and a side opposite one of them; scalene
triangle