What is an isosceles scalene and equadrilateral triangle

-- An isosceles triangle is a triangle in which
two sides have the same length.

-- A scalene triangle is a triangle in which
all three sides have different lengths.

-- An equilateral triangle is a triangle in which
all three sides have the same length.

Equilateral has 3 sides that are equal measure (all sides are equal)

isocoleese has 2 sides that are eqeal measure

scalene has 0 sides that have equal measure