What is a Triangle:
A polygon with 3 edges,We take 3 points and connect them with 3 sides below denoted as ΔPQR:
3 vertices, 3 angles.
Properties of a Triangle:
Sum of the three interior angles = 180°Sum of the 2 sides > 3rd side
A triangle with vertices (points) P, Q, R:
is denoted as ΔPQR
