Which type of triangle will always have exactly 1-fold reflectional symmetry? right triangle obtuse triangle equilateral triangle isosceles triangle

Isosceles Triangle      

Step-by-step explanation:

Reflection symmetry exists when the figure can be folded over onto itself along a line. This line is called the line of symmetry. In a regular polygon, the number of lines of symmetry is equal to the number of sides in the polygon.Isosceles triangle is a type of triangle that will always have exactly 1-fold reflection symmetry.1-fold reflection symmetry means that one line or 1 division can divide the whole figure into two symmetrical parts.An isosceles triangle is a triangle that has two sides of equal length. Isosceles triangle has at least one line of symmetry.

Thus, the answer is Option c) Isosceles triangle.

Main idea on left, details on right

The answer should be c.