Question

learn with an example
the word decagon contains the root dec. what does the root dec mean?
bend or curve
shape
one hundred
ten

Explanation:

The root "dec-" comes from Latin and Greek, and in words like "decagon" (a 10-sided polygon), it refers to the number ten. "One hundred" corresponds to the root "cent-", while "bend or curve" and "shape" are unrelated to this root.

Answer:

ten