Question: Discrete Mathematics 3 (15 points) In a planar graph, every face, including outer face, is a 4-gon (rectangle) and every vertex has degree 3. How
Discrete Mathematics

3 (15 points) In a planar graph, every face, including outer face, is a 4-gon (rectangle) and every vertex has degree 3. How many faces are there in this graph? Show your calculation and draw this graph without edge crossing
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