This page presents a series of practice problems focusing on various triangle congruence methods, including SSS, SAS, ASA, AAS, and HL. Students are asked to compare triangles and determine which congruence theorem can be applied to prove their congruence.

Vocabulary: SSS $Side-Side-Side$, SAS $Side-Angle-Side$, ASA $Angle-Side-Angle$, AAS $Angle-Angle-Side$, HL $Hypotenuse-Leg$

Example: Problem 7 demonstrates the use of the HL Theorem to prove triangle congruence in a right triangle scenario.

Highlight: The problems cover a wide range of scenarios, helping students distinguish between different congruence methods and choose the appropriate theorem for each situation.

This page provides homework exercises focusing on Angle-Side-Angle (ASA) and Angle-Angle-Side (AAS) congruence proofs. It includes detailed instructions and space for students to complete the proofs step-by-step.

Example: Proof 1 demonstrates the use of ASA to prove ΔABD ≅ ΔCBD, given that BD bisects ∠ABC and ∠BDA = ∠BDC.

Highlight: The proofs require students to apply their knowledge of angle bisectors, alternate interior angles, and vertical angles in addition to the congruence theorems.

Vocabulary: Bisect - to divide into two equal parts.

This page continues the homework section with additional proofs using AAS and introduces a proof using the Hypotenuse Leg Theorem. It reinforces the concepts learned in previous pages and challenges students to apply their knowledge to more complex scenarios.

Example: Proof 6 demonstrates the application of the HL Theorem to prove ΔABC ≅ ΔDCB, given that they are both right triangles and AB = DC.

Highlight: The variety of proofs on this page helps students practice different congruence methods and understand when to apply each theorem.

Vocabulary: Midpoint - a point that divides a line segment into two equal parts.

This page introduces the HL $hypotenuse-leg$ Congruence Theorem and provides examples of its application. It explains that if the hypotenuse and a leg of one right triangle are congruent to the hypotenuse and a leg of another right triangle, then the two triangles are congruent. The page includes visual representations of right triangles and step-by-step proofs using the HL Theorem.

Definition: The hypotenuse is the longest side of a right triangle, opposite the right angle. A leg is a side adjacent to the right angle.

Example: A proof is provided to show that ΔLMP ≅ ΔNMP using the HL Theorem, given that LM = MN and MP is common to both triangles.

Highlight: The page also demonstrates an alternative method using the AAS $Angle-Angle-Side$ congruence theorem, showcasing the versatility of triangle congruence proofs.