Proving Parts Congruent with CPCTC

The video tutorial explains how to prove triangles are congruent using methods like SSS, SAS, ASA, and AAS. It introduces CPCTC, which stands for Corresponding Parts of Congruent Triangles are Congruent, and demonstrates its application in proofs. The tutorial includes examples to illustrate the process of proving triangle congruence and using CPCTC to prove congruent parts. Students are encouraged to practice with additional problems.

What does the acronym CPCTC stand for?

• Congruent Parts of Corresponding Triangles are Corresponding

• Corresponding Parts of Congruent Triangles are Congruent

• Congruent Parts of Corresponding Triangles are Congruent

• Corresponding Parts of Congruent Triangles are Corresponding

Which of the following is NOT a method to prove triangles are congruent?

• Angle-Angle-Side (AAS)

• Side-Angle-Side (SAS)

• Side-Side-Side (SSS)

• Side-Side-Angle (SSA)

In the SSS method, what property is used to state that AC is congruent to AC?

• Transitive Property

• Reflexive Property

• Symmetric Property

• Substitution Property

What is the final step in proving that angle BCA is congruent to angle DCA in Example 1?

• Using the Reflexive Property

• Proving triangles are congruent by SSS

• Stating that corresponding parts are congruent by CPCTC

• Identifying the given information

In Example 2, what additional information is used to prove triangles are congruent?

• Vertical Angles

• Supplementary Angles

• Alternate Interior Angles

• Corresponding Angles

Which method is used to prove triangles are congruent in Example 2?

• Side-Side-Side (SSS)

• Side-Angle-Side (SAS)

• Angle-Side-Angle (ASA)

• Angle-Angle-Side (AAS)

What is the reason for stating that PQ is congruent to RS in Example 2?

• CPCTC

• Transitive Property

• Given Information

• Reflexive Property

In the summary, which method is NOT mentioned as a way to prove triangles are congruent?

• Angle-Angle-Side (AAS)

• Angle-Side-Angle (ASA)

• Side-Side-Side (SSS)

• Side-Angle-Angle (SAA)

If both sets of alternate interior angles are used, which method can be applied?

• Angle-Angle-Side (AAS)

• Angle-Side-Angle (ASA)

• Side-Angle-Side (SAS)

• Side-Side-Side (SSS)

What should students do next after the CPCTC lesson?

• Check Google Classroom for instructions

• Review the video again

• Complete the homework

• Prepare for a test