Preparing for the Regents Examination Geometry, AK

Part IV
For each question, use the specific criteria to award a maximum of 6 credits.
38 Score Explanation
6 The following proof or another appropriate proof is given.
Statements Reasons
1. Parallelogram ABCD,
with −−−
ABG
146 Practice Geometry Regents Examinations
1. Given.
2. −−
AB −−−
CD , −−−
AG −−−
CD 2. Definition of a parallelogram.
3. MGB MDC 3. Alternate interior angles are congruent.
4. BMG CMD 4. Vertical angles are congruent.
5. M is the midpoint of −−
BC . 5. Given.
6. −−−
BM −−−
MC 6. Definition of midpoint.
7. a BGM CDM 7. AAS AAS.
8. −−
BG −−−
CD 8. CPCTC.
9. −−
AB −−−
CD 9. Opposite sides of a parallelogram are congruent.
10. b −−
AB −−
BG 10. Transitive postulate of congruence
5 An appropriate proof with correct conclusion is shown, but one reason is faulty and/or
one statement is missing.
4 A faulty conclusion or no conclusion is drawn from correct statements and reasoning.
3 An appropriate proof with correct conclusion is shown, but no conclusion is made
for −−
AB −−
BG .
2 An appropriate proof with correct conclusion is used, but multiple reasons are faulty or
multiple steps are missing or have errors.
1 BGM CDM and −−
AB −−
BG , and a reason is given, but no appropriate proof is
shown.
0 A zero response is completely incorrect, irrelevant, or incoherent or is a correct response
that was obtained by an obviously incorrect procedure.