Question

Which geometric term is essential as the foundation upon which the concept of perpendicularity is built?

Options

• Acute Angle

• Right Angle

• Vertex

• Intersection

Answer 1

Right Angle

Explanation:

The concept of perpendicularity in geometry is based on the formation of a right angle (90°).
Two lines or line segments are said to be perpendicular when they intersect to form a right angle.