Edge

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?

    Choices:
    A. 14
    B. 12
    C. 10
    D. 6
    Corrected Answer: B

Solution:

    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.