Choose the meter and line length of the line of poetry below. the assyrian came down like the wolf on the fold. iambic pentameter trochaic tetrameter anapestic tetrameter dactylic pentameter

Hello let me walk you though this! :) 
So iambic pentameter is  unstressed syllables followed by stressed syllables in a total of 5 measures.  
Trochaic tetrameter is stressed syllable followed by an unstressed syllable in a total of 4 measures.
Anapestic tetrameter is two unstressed syllables followed by a stressed syllable in total of 4 measures.
Dactylic pentameter is a stressed syllable followed by two unstressed syllables in a total of 5 measures.
We can look at these as the following
Iambic: ˘ ¯ 
Trochaic: ¯ ˘
Anapestic: ˘ ˘ ¯
Dactylic: ¯ ˘ ˘
If you  notice the pattern an easy way to remember them is that they are opposites of each other.  So now lets look a the text given.
" The Assyrian came down like the wolf on the fold."
Looking at this we can recognize the meter as  two unstressed syllables followed by a stressed syllable in total of 4 measures.
Making our answer be Anapestic tetrameter.

Hope I helped! If you have any other questions or would further explanation just let me know! :)