Definition of Edge
Edges are the intersection of faces in a three-dimensional figure.
Example of Edge
In the cube shown, the red line segment is the intersection of the faces A and B of the cube.
Video Examples:Edge-ucation: Vedic Maths: Trick for Multiplication of 2-Digit Nos
Solved Example on Edge
Ques: How many edges does a cube have?
Corrected Answer: B
Step 1: A cube has two square bases and four square faces joining the two bases.
Step 2: So, the number of edges of a cube = number of edges of the two bases + number of edges joining the bases.
Step 3: = (2 � 4) + 4 = 8 + 4 = 12
Step 4: So, a cube has 12 congruent edges.