Trace the outline of a tectonic plate. What feature did you use ...

[naturalchemist]

Trace the outline of a tectonic plate. What feature did you use to find the plate boundary?
 
  What will be an ideal response?

Question 2

What type of plate boundary exists along the east (right) margin of the diagram? How do you know? Please explain.
 
  What will be an ideal response?

[cuttiesgirl16]

Answer to Question 1

Trace is the bold black line on the diagram above. The earthquake dots were used to find the plate boundary.

Answer to Question 2

The boundary is a subduction zone. The outlined plate (ocean side) is subducting under the continent on the right. I know this because the deep focused earthquakes are on the continental plate and these are formed by the subducting slab as it moves underneath the continent.

[naturalchemist]

Thanks for the timely response, appreciate it

[jomama]

Gracias!