How many edges are there in a
A. cuboid
B. tetrahedron
C. triangular prism
D. square pyramid?
A. 12
A Cuboid has twelve edges.
AB, BC, CD, DA, EF, FG, GH, HE, AE, DH, BF, CG are the 12 edges.
B. 6
A Tetrahedron has six edges.
OA, OB, OC, AB, AC, BC are the 6 edges.
C. 9
A Triangular prism has nine edges.
AB, BC, CA, DE, EF, FD, AD, BE, CF are the edges.
D. 8
A Square Pyramid has eight edges.
AB, BC, CD, DA, OA, OB, DC, OD are the edges.