8th Grade Math Assessment Practice: Key Concepts and Strategies

What does it mean when two figures are congruent?

• They have the same color.

• They are mirror images but not the same size.

• They have the same shape and size but different orientations.

• They have different sizes.

What is the first step in identifying congruent sides in figures?

• Checking their orientations

• Measuring their lengths

• Comparing their colors

• Finding the mirror image

Which angles are not congruent in the given parallelograms?

• Angle D and Angle X

• Angle A and Angle W

• Angle B and Angle X

• Angle C and Angle Y

How do you find the radius of a circle given its area?

• Multiply the area by π

• Divide the area by π and take the square root

• Divide the area by the diameter

• Square the area and divide by π

What is the first step in calculating the area of a composite shape?

• Divide the shape into smaller, manageable parts

• Calculate the area of the largest possible rectangle

• Subtract the smaller shape from the larger shape

• Add the areas of all individual shapes

How do you find the area of a triangle given its base and height?

• Divide the product of base and height by 2

• Square the base and multiply by height

• Multiply base by height

• Multiply base by height and divide by 2

How do you solve for an unknown side in similar shapes?

• Multiply the lengths of the known sides

• Add the lengths of the known sides

• Set up a proportion and cross multiply

• Use the Pythagorean theorem

What is the height of the image cast by the lens?

• 12 inches

• 8 inches

• 10 inches

• 15 inches

What are the actual dimensions of Jennifer's studio apartment?

• 18 feet by 27 feet

• 27 feet by 18 feet

• 30 feet by 45 feet

• 45 feet by 30 feet

What is the correct way to set up a ratio for converting inches to feet in scale drawings?

• Inches over feet equals desired inches over x

• Feet over inches equals desired inches over x

• Inches over feet equals x over desired feet

• Feet over inches equals x over desired feet