Triangle JKL is isosceles. The measure of angle J is 72 degrees and the measure of angle K is 36 degrees.

Step-by-step explanation:

"which is the measure of angle L?"

the total angle measures of all angles on a triangle should always equal 180

72 + 36 = 108

180 - 108 = 72!

angle L is 72 degrees!

"which angle is the vertex angle?"

from my understanding, the angle opposite the base would be the vertex angle

since j and k are equal, we can only assume 36 is the vertex angle!

hope this helps! if so, pls give brainliest!

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i'm assuming that it's c.)   volcanoes built the mountains and earthquakes tore them down.