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Math Dictionary
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  Face     Three dimensional figure     Line segment  

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Edge
Definition of Edge

  • Edges are the intersection of faces in a three-dimensional figure.

Examples of Edge

  • In the Cube shown, the red Line segment is the intersection of the faces A and B of the cube.

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Solved Example on Edge

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.

Related Terms for Edge

  • Line Segment
  • Faces
  • Three-dimensional Figure

Additional Links for Edge
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