Preparing for the Regents Examination Geometry, AK

20 Score Explanation
6 The following proof or another appropriate proof is given.
Statements Reasons
1. −−
BD is the median of ABC. 1. Given.
2. −−
BA −−
BC 2. Given.
3. ABC is isosceles. 3. Definition of isosceles triangle.
4. −−
BD −−
AC 4. The median from the vertex angle of an
5.
isosceles triangle is perpendicular to the base.
−−
BD is an altitude to −−
AC . 5. Definition of an altitude.
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 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 multiple reasons are faulty
or multiple steps are missing or have errors.
1 −−
BD is an altitude to −−
AC 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 1–6
(pages 450–453)
Part I
Allow a total of 20 credits, 2 credits for each of the following correct answers. Allow credit if the student has
written the correct answer instead of the numeral 1, 2, 3, or 4.
1 (3) a ab b 2 6 (3) 4z
2 (1) (x 9, y 5)
3 (4)
7 (2)
−−
AE −−
BE 8 (2) −−
XY −−−
MA
4 (2) (x, y) 9 (1) (4, 5)
5 (4) ~r → ~p 10 (2) dilation
Part II
For each question, use the specific criteria to award a maximum of 2 credits.
11 Score Explanation
2 25, and an appropriate explanation is given.
1 25, but no explanation is given.
0 A zero response is completely incorrect, irrelevant, or incoherent or is a correct response
that was obtained by an obviously incorrect procedure.
106 Cumulative Reviews