Question: suppose you have three identical prisms with congruent equilateral triangles as the end - polygons . suppose you attach them by the rectangular faces so they are perfectly aligned . there will be some large faces created by two or more co - planar faces of the individual prisms : count each such large face as one . given that , how many faces does the resultant solid have
A)  4
B)  6
C)  9
D) 10
E) 5
Correct answer: e
Grade: 7 | Topic: Geometry | Difficulty: Hard | Standard: 7.G.A.3