(D) 80°, 140°, and 70° group of segments cannot form a triangle.
<h3>What is a triangle?</h3>
A triangle is a three-edged polygon with three vertices.
It is a fundamental shape in geometry.
Triangle ABC represents a triangle with vertices A, B, and C.
In Euclidean geometry, any three non-collinear points define a unique triangle and, by extension, a unique plane.
In other words, the triangle is contained in just one plane, and every triangle is contained in some plane.
There is just one plane and all triangles are enclosed in it if the entire geometry is merely the Euclidean plane; but, in higher-dimensional Euclidean spaces, this is no longer true.
To find which group of segments cannot form a triangle:
80°, 140°, and 70° cannot form a triangle because the sum of the three angles is 290°, whereas the sum of the angles in a triangle is 180°.
Therefore, (D) 80°, 140°, and 70° group of segments cannot form a triangle.
