Final answer:
The poetic line is in iambic meter with a masculine ending due to its alternating unstressed and stressed syllables, ending on a stressed note.
Step-by-step explanation:
The line of poetry provided, "dost thou know who made thee", is in iambic meter. This can be identified by the alternating unstressed and stressed syllables - daDUM daDUM daDUM daDUM. This pattern matches the definition of iambic meter, which contains an unstressed syllable followed by a stressed syllable, sometimes equated to the sound of a heartbeat. As for the ending of the line, it is considered masculine because it ends on a stressed syllable. A feminine ending, in contrast, would end on an unstressed syllable.