Plz will give

the coordinates of the vertices of δarc are a(-1, -2), r(-3, 4), and c(5, 0). angela is trying to determine whether this shape is a right triangle or not. she has made a mistake in the work below the graph. explain the mistake and show the correct solution.
hint: the grid is provided for your use (optional). the graph is not worth any points and will not be considered when graded.
hint: when explaining the mistake, make sure you identify how it is wrong and how it needs to be corrected.

estimate the area of the irregular shape (don’t forget to show work). explain your method.