Unit Test — Unit test Answers
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21
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Which figure shows a line of reflectional symmetry for the letter T?
A
A letter T is folded at the horizontal line.
B
A letter T is folded diagonally.
C
A letter T is folded vertically through the middle.
D
A letter T is folded diagonally through its center.
22
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Which transformations could have taken place? Select two options.
A
R0, 90°B
R0, 180°C
R0, 270°D
R0, –90°E
R0, –180°23
Which shows the pre-image of quadrilateral W'X'Y'Z' before the figure was rotated according to the rule (x, y) → (–x, –y)?
A
On a coordinate plane, a quadrilateral has points W (negative 3, 2), X (negative 3, 6), Y (negative 4, 6), Z (negative 5, 3).
B
On a coordinate plane, a quadrilateral has points W (3, negative 2), X (3, negative 6), Y (4, negative 6), Z (5, negative 3).
C
On a coordinate plane, a quadrilateral has points W (negative 2, negative 3), X (negative 6, negative 3), Y (negative 6, negative 4), Z (negative 3, negative 5).
D
On a coordinate plane, a quadrilateral has points W (negative 3, negative 2), X (negative 3, negative 6), Y (negative 4, negative 6), Z (negative 5, negative 3).
24
On a coordinate plane, 2 triangles are shown. Triangle J K L has points (2, negative 4), (5, negative 4), (2, negative 2). Triangle J double-prime K double-prime L double-prime has points (2, 2), (2, 5), (0, 2).
A
90 degree rotation about point 0 composition translation of 0 units x, negative 2 units y
B
Translation of 0 units x, negative 2 units y composition 90 degree rotation about point 0
C
90 degree rotation about point 0 composition translation of negative 2 units x, 0 units y
D
Translation of negative 2 units x, 0 units y composition 90 degree rotation about point 0
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