If two 2x2 squares of regions S1 and S2 meet at the midpoints of the sides as shown, find the area of the square region, S1, S2?

When turned about its axis of rotation, which shape could have created this three-dimensional object?

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches