edge


Definition of Edge

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

More about e

Examples of Edge

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

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