Mass extinctions occur for many reasons. Changes in the environment might make it impossible for the local life to survive, diesease or drought might strike, or there might be a natural disaster. These extinctions make good divisions in geologic time because they are easy to locate over a wide area and mark a definitive change in the Earth's systems.
Your answer is a regular hexagon inscribed in a circle.
Answer:
Centroid = (5, 1)
Explanation:
Given:
S(5, 5), T(11,−3), U(−1, 1)
Required:
Coordinates of the centroid of the triangle
SOLUTION:
Formula for centroid for coordinates to find the centroid of a triangle = 
Where,



Plug in the values into the formula:


Centroid = (5, 1)