This site defines what a locus is and offers links to five locus theorems. Walks you through the six "Steps to solving a locus problem."

In this task, students must prove that angles and triangles are congruent and that a parallel line passes through the midpoints of two sides of the larger triangle. Aligns with G-SRT.B.4.

Part one of three; The March 2006 8th grade Math test from the State of New York. The test is 27 multiple choice questions dealing with topics such as algebra (translating into algebraic terms, simplifying expressions, evaluating...

Part two of three; The March 2010 8th grade Math test from the State of New York. The test is six open-response questions covering topics such as geometry (intersecting / parallel lines, Pythagorean Theorem), measurement (maps), and...

Loci are applied to word problems in this online tutorial. Practice problems are included. The teacher resource page supplies practical problems.

[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to determine if lines in triangles are parallel and find missing lengths using the Triangle Proportionality Theorem.

In this task, students are asked to draw a quadrilateral so that no two sides are congruent, no two angles are congruent, and no two sides are parallel. The task gives students the opportunity to prove that if we join the midpoints of a...

Suppose that ABCD is a parallelogram and that M and N are the midpoints of lines AB and CD respectively. Young scholars are asked to prove that MN=AD, and that the line MN is parallel to line AD. Aligns with G-CO.C.11.

In this task, students are shown three unit squares and two line segments connecting two pairs of vertices. They are asked to find the area of a triangle formed by intersecting lines. They can solve it using coordinate geometry or...