Approximate Time: Two to three 50-minute lessons or one to two 90-minute lessons
Objective: The student will investigate points of concurrency in triangles and apply these concepts to real-world situations.

Approximate Time: One 45-minute lesson and a follow-up for 20 minutes in a subsequent lesson.
Objective: For the students to understand the difference between constructions, sketches, and drawings.

Approximate Time: 50-minute lesson
Objective: The student will use analytic geometry to write coordinate proofs involving midpoint, slope and distance.

Approximate Time: Two to three 50-minute lessons or one to two 90-minute lessons
Objective: For the students to be able to perform geometric constructions using a variety of construction tools, investigate the properties of perpendicular bisectors and angle bisectors, and apply geometric constructions to real-life situations.

Approximate Time: 50-minute lesson
Objective: Students will be able to identify and apply properties of equality and properties of congruence, write flow chart proofs for organizing deductive arguments, and validate properties of geometric figures and explain the processes used.

Approximate Time: 50-minute lesson
Objective: Students will be able to identify and apply properties of equality and properties of congruence, and validate properties of geometric figures and explain the processes used.

Approximate Time: 50-minute lesson
Objective: Students will be able to identify and apply properties of equality and properties of congruence, write paragraph proofs for organizing deductive arguments, and validate properties of geometric figures and explain the processes used.

Approximate Time: 50-minute lesson
Objective: Students will be able to identify and apply properties of equality and properties of congruence, perform a variety of methods for organizing deductive arguments, and validate properties of geometric figures and explain the processes used.

Approximate Time: 50-minute lesson
Objective: Students will be able to identify and apply properties of equality and properties of congruence, write two-column proofs for organizing deductive arguments, and validate properties of geometric figures and explain the processes used.