Quiz about Grade 8 | Unit 2: Dilations, Similarity, and Introducing Slope | End-of-Unit Assessment (A)

Question 1

Select all the true statements.

Accepted Answer

Dilations of a triangle are similar to the original triangle.

Accepted Answer

Dilations of an angle are congruent to the original angle.

Accepted Answer

Dilations take perpendicular lines to perpendicular lines.

Answer

Dilations increase the measure of angles.

Answer

Dilations always increase the length of line segments.

Question 2

Which pair of triangles must be similar?

Accepted Answer

Triangle 7 has a $$50^\circ$$ angle and a $$25^\circ$$ angle. Triangle 8 has a $$50^\circ$$ angle and a $$105^\circ$$ angle.

Answer

Triangles 1 and 2 each have a $$35^\circ$$ angle.

Answer

Triangles 3 and 4 are both isosceles. They each have a $$40^\circ$$ angle.

Answer

Triangle 5 has a $$30^\circ$$ angle and a $$90^\circ$$ angle. Triangle 6 has a $$30^\circ$$ angle and a $$70^\circ$$ angle.

Question 3

Select all the lines that have a slope of $$\frac52$$ .

Accepted Answer

Line A: rise = 10, run = 4

Accepted Answer

Line E: rise = 2, run = 1

Answer

Line B: rise = 4, run = 2

Answer

Line C: rise = 2, run = 5

Answer

Line D: rise = 1, run = 2

Question 4

Which of Polygons B, C, D, E, and F are similar to Polygon A? Choose one polygon that is similar to Polygon A, and describe a sequence of transformations that take Polygon A to the selected polygon.

Accepted Answer

Polygon B

Accepted Answer

Polygon C

Accepted Answer

Polygon E

Answer

Polygon D

Answer

Polygon F

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics