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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.

 example of  Edge

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? 


A. 14 
B. 12
C. 10
D. 6
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.