Unit Test — Cumulative exam Answers
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21
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On a coordinate plane, 2 lines are shown. Line P Q has points (negative 5, 3) and (5, 1). Line R S has points (negative 4, negative 2) and (0, negative 4).
A
They are parallel because their slopes are equal.B
They are parallel because their slopes are negative reciprocals.C
They are not parallel because their slopes are not equal.D
They are not parallel because their slopes are negative reciprocals.22
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Triangles A B C and N M Q are shown. Sides B C and N M are congruent. Angles A B C and Q N M are congruent. Angles B C A and N M Q are both right angles.
A
A ≅ Q because of the third angle theorem.
B
AB ≅ QN because they are both opposite a right angle.C
BC ≅ NM because it is given.D
C ≅ M because right angles are congruent.23
In the diagram, which angles form a linear pair? Select three options.
A
RST and RSVB
RST and TSUC
RST and VSUD
TSU and USVE
TSU and RSV24
Which statements are correct? Select three options.
A
△BCD is similar to △BSR.B
StartFraction B R Over R D EndFraction = StartFraction B S Over S C EndFraction
C
If the ratio of BR to BD is , then it is possible that BS = 6 and BC = 3.
D
(BR)(SC) = (RD)(BS)E
StartFraction B R Over R S EndFraction = StartFraction B S Over S C EndFraction
25
Which diagram has all the correct lines of reflectional symmetry for the rectangle?
A
A rectangle is folded diagonally on both corners.
B
A rectangle is folded by a vertical and horizontal line going through its center.
C
A rectangle is folded 4 ways. It is folded horizontally, vertically, and diagonally on both corners.
D
A rectangle is folded 4 ways. It is folded diagonally at each midpoint of every side.
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