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Preparing for the Regents Examination Geometry, AK

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Part III<br />

For each question, use <strong>the</strong> specific criteria to award a maximum of 4 credits.<br />

15 Score Explanation<br />

4 2 : 3, and an appropriate explanation is given.<br />

3 An appropriate method is used, but a single arithmetical error is made.<br />

2 An appropriate method is used, but multiple arithmetical errors are made.<br />

1 2 : 3, but no explanation is given.<br />

0 A zero response is completely incorrect, irrelevant, or incoherent or is a correct response<br />

that was obtained by an obviously incorrect procedure.<br />

16 Score Explanation<br />

4 x 7, mP 62, mQ 28, and an appropriate explanation is given.<br />

3 An appropriate method is used, but a single arithmetical error is made.<br />

2 An appropriate method is used, but multiple arithmetical errors are made.<br />

1 x 7, mP 62, mQ 28, but no explanation is given.<br />

0 A zero response is completely incorrect, irrelevant, or incoherent or is a correct response<br />

that was obtained by an obviously incorrect procedure.<br />

17 Score Explanation<br />

4 The following proof or ano<strong>the</strong>r appropriate proof is given.<br />

Statements Reasons<br />

1. −−−<br />

AD −−<br />

BC , −−<br />

DE −−<br />

CE , −−<br />

EA −−<br />

EB 1. Given.<br />

2. ADE BCE 2. SSS SSS.<br />

3. 1 2 3. CPCTC.<br />

4. 3 4 4. Base angles of an isosceles triangle are<br />

congruent.<br />

5. 1 3 2 4 5. Addition postulate.<br />

6. DAB CBA 6. Partition postulate.<br />

3 An appropriate proof with correct conclusion is shown, but one reason is faulty and/or<br />

one statement is missing.<br />

2 An appropriate proof with correct conclusion is used, but multiple reasons are faulty or<br />

multiple steps are missing or have errors.<br />

1 DAB CBA and a reason is given, but no appropriate method is shown.<br />

0 A zero response is completely incorrect, irrelevant, or incoherent or is a correct response<br />

that was obtained by an obviously incorrect procedure.<br />

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