Identify whether each statement must be true, could possibly be true, or definitely can’t be true.

1. A diameter is a chord.
2. A radius is a chord.
3. A chord is a diameter.
4. A central angle measures 90.

Triangle has vertices at  and . What is the point of intersection of the triangle’s medians?

Consider the parallelogram with vertices at  and . Where do the diagonals of this parallelogram intersect?

Lines and are parallel. Select all true statements.

Parallel lines . Horizontal axis x scale negative 8 to 8 by 2’s. Vertical y axis scale negative 8 to 8 by 2’s. Points A and B are on line l at  A(negative 6 comma 4) and B(2 comma 0). Points F and C are on line p at F(negative 8 comma 2) and C(8 comma negative 6). Point D(2 comma 4) is above line l, and forms triangle A D B with dashed segments. Point E(negative 8 comma negative 6) is below line p, and forms triangle F E C with dashed segments.