Question

which type of triangle will always have at least 1 - fold reflectional symmetry?
right triangle
obtuse triangle
acute triangle
isosceles triangle

Explanation:

An isosceles triangle has at least one line of symmetry which is the line that bisects the angle between the two equal - length sides and also bisects the opposite side. Right, obtuse, and acute triangles do not always have a line of symmetry.

Answer:

D. isosceles triangle