Exploring Circle Proofs

Which of the following is NOT a triangle congruence theorem?

• Hypotenuse-Leg (HL)

• Angle-Angle-Angle (AAA)

• Side-Angle-Side (SAS)

• Side-Side-Side (SSS)

What does CPCTC stand for?

• Corresponding Parts of Congruent Triangles are Similar

• Corresponding Parts of Congruent Triangles are Congruent

• Congruent Parts of Similar Triangles are Congruent

• Congruent Parts of Congruent Triangles are Congruent

Which triangle similarity theorem is most commonly used?

• Side-Side-Side (SSS)

• Angle-Side-Angle (ASA)

• Side-Angle-Side (SAS)

• Angle-Angle (AA)

When proving triangle similarity, what is the key difference in the sides compared to proving congruence?

• Sides must be perpendicular

• Sides must be parallel

• Sides must be proportional

• Sides must be equal in length

Which of the following is NOT a type of angle to look for when given parallel lines?

• Adjacent angles

• Vertical angles

• Corresponding angles

• Alternate interior angles

What property is used when triangles share a side or an angle?

• Substitution property

• Symmetric property

• Reflexive property

• Transitive property

What angle is formed when a tangent line meets a radius?

• 180 degrees

• 45 degrees

• 60 degrees

• 90 degrees

Inscribed angles that intercept the same arc are:

• Equal

• Supplementary

• None of the above

• Complementary

In the example with circle O, what property is used to prove that angle B is congruent to angle A?

• Alternate interior angles

• CPCTC

• Vertical angles

• Reflexive property

In the example with the diameter BO, what is the first step in proving similarity?

• Identify corresponding sides

• Identify parallel lines

• Identify inscribed angles

• Identify vertical angles