111.28.B.10.b Congruence and Transformations

Quiz by Quizalize - Grade 8 Math

Grade 8
Mathematics
Texas Essential Knowledge and Skills (TEKS)

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### Measures 1 skill fromGrade 8MathematicsTexas Essential Knowledge and Skills (TEKS)

8.10.B: Two-Dimensional Shapes

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10 questions
Show answers
• Q1
Which representation of a transformation on a coordinate plane does NOT preserve congruence?
(x,y) → (½ x , ½ y)
(x,y)→ (-y , x)
(x,y) → (x–5 , y + 6)
(x,y) → (x , -y)
300s
8.10.B: Two-Dimensional Shapes
• Q2
Which representation of a transformation on a coordinate plane does NOT preserve congruence?
(x,y) → (x + 6 , y + 7)
(x,y) → (4x , 4y)
(x,y) → (-x , y)
(x,y) → (-x , -y)
300s
8.10.B: Two-Dimensional Shapes
• Q3
Which representation of a transformation on a coordinate plane preserves congruence?
(x,y) → (⅓ x , ⅓ y)
(x,y) → (x + 2 , y – 4)
(x,y) → (4x , 4y)
(x,y) → (5/3x , 5/3y)
300s
8.10.B: Two-Dimensional Shapes
• Q4
A transformation is applied to create a new figure. Which transformation does NOT preserve congruence?
A translation 3 units up and 4 units right.
A rotation 90º clockwise
A reflection across the y-axis.
A dilation by a scale factor of 3
300s
8.10.B: Two-Dimensional Shapes
• Q5
A transformation is applied to create a new figure. Which transformation does NOT preserve congruence?
A translation of 5 units to the left.
A reflection across the x axis.
A dilation by a scale factor of ¼
A rotation of 270º counterclockwise.
300s
8.10.B: Two-Dimensional Shapes
• Q6
Which transformation of the trapezoid will NOT result in a congruent figure?
Rotation
Dilation
Translation
Reflection
300s
8.10.B: Two-Dimensional Shapes
• Q7
The diagram on the grid shows a pentagon. Which description correctly explains the effects of a dilation of the pentagon?
A dilation will produce congruent figures because both figures will be pentagons.
A dilation will produce congruent because the angles of the figures will be congruent.
A dilation will not produce congruent figures because the figures will be different shapes.
A dilation will not produce congruent figures because different sized figures cannot be congruent.
300s
8.10.B: Two-Dimensional Shapes
• Q8
In order to produce a transformation that does not preserve congruence, the image must...
...change orientation.
...change quadrants.
...become larger or smaller than the pre-image.
...be the same shape as the pre-image.
300s
8.10.B: Two-Dimensional Shapes
• Q9
In order to produce a transformation that preserves congruence...
...the transformation must have a scale factor not equal to 1.
...the image must be larger than the pre-image.
...the image must be smaller than the pre-image.
...the image must be the same size and the same shape as the pre-image.
300s
8.10.B: Two-Dimensional Shapes
• Q10
Which of the following transformations does NOT preserve congruence?
300s
8.10.B: Two-Dimensional Shapes

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