Preparing for the Regents Examination Geometry, AK

19 Score Explanation
6 The following proof or another appropriate proof is given.
Statements Reasons
1. Parallelogram ABCD;
−−−
EAB ; −−−
DCF
1. Given.
2. −−
AB −−−
DC 2. Definition of a parallelogram.
3. −−
EB −−
DF 3. Collinearity.
4. AEH CFG 4. Alternate interior angles are congruent.
5. BAH BCD 5. Opposite angles of a parallelogram are
congruent.
6. GCF and BCD are a linear
pair. HAE and BAH are a
linear pair.
7. GCF and BCD are supplementary.
HAE and BAH are
supplementary.
6. Definition of linear pair.
7. Two angles that form a linear pair are
supplementary.
8. GCF HAE 8. Supplements of congruent angles are
congruent.
9. a EAH FCG 9. AA.
10. EA _
AH
FC
_
CG
10. Corresponding parts of similar triangles are in
proportion.
11. b EA CG AH CG 11. The product of means equals the product of
extremes.
5 An appropriate proof with correct conclusion is shown, but one reason is faulty and/or
one statement is missing.
4 An appropriate proof with correct conclusion is shown for part a only.
4 A faulty conclusion or no conclusion is drawn from the statements and reasoning.
3 An appropriate proof with correct conclusion is shown, but two reasons are faulty or
two steps are missing.
2 An appropriate proof with correct conclusion is used, but more than two reasons are
faulty or more than two steps are missing or have errors.
1 EAH FCG and EA CG AH CG, and a reason is given, but no appropriate
method 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.
Chapters 1–13 133