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Figure 88.
Animals have various types of body symmetry. The sponge (a) is asymmetrical with no
planes of symmetry, the sea anemone (b) has radial symmetry with multiple planes of symmetry,
and the goat (c) has bilateral symmetry with one plane of symmetry.
Figure 88(c) depicts bilateral symmetry using a goat. The goat has upper and lower sides as
well, though they are not symmetrical. The animal is divided into roughly mirror-image right and left
sides by a vertical plane cut from front to back. Bilaterally symmetric animals have a "head" and
"tail" (anterior versus posterior), as well as a back and underside (dorsal versus
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