it depends on the numbers on the edges
A triangle has three sides or edges.
There are three straight edges in a triangle.
there are no curved edges on any triangle.
Three EdgesA triangle has three edges.
A triangle has three edges; a rectangle has four.
A triangle consists of three corners and three edges.
-- Measure or calculate the length of one side. -- Measure or calculate the length of another side. -- Measure or calculate the length of the only remaining side. -- Add the three numbers. The sum is the perimeter of the triangle.
A triangle has 3 sides (or edges) and 3 corners (or angles)
A triangle has one face, three vertices and three edges.
There are three sides to a triangle.
there are no curves in a triangle