# Spectrum Math Grade 5 Chapter 9 Pretest Answer Key

Practice with the help of Spectrum Math Grade 5 Answer Key Chapter 9 Pretest regularly and improve your accuracy in solving questions.

## Spectrum Math Grade 5 Chapter 9 Pretest Answers Key

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Circle all the regular polygons.

Question 1.

Regular polygons are polygons whose sides and angles are equal.

Identify the following quadrilaterals. Write the number that refers to the correct figure.

Question 2.
rhombus _____________
A rhombus has two pairs of parallel sides and four equal sides.

Question 3.
rectangle trapezoid _____________
A rectangle has four right angles, two pairs of parallel sides, and two pairs of equal sides.

Question 4.
trapezoid _____________
A trapezoid has only one pair of parallel sides.

Question 5.
parallelogram _____________
A parallelogram has 4 sides, and both sets of opposite sides are parallel.

Identify the polygons.

Question 6.
a.

A rectangle has four right angles, two pairs of parallel sides, and two pairs of equal sides.

b.

A polygon with three sides is called a triangle.

Question 7.
a.

A square is a rectangle with four equal sides.

b.

A polygon with six sides is called a hexagon.

Use a protractor to measure each angle. Then, label each angle right, acute, or obtuse.

Question 8.
a.

The type of angle in the above figure is acute angle.
An acute angle measures less than 90°.

b.

The type of angle in the above figure is obtuse angle.
An obtuse angle measures greater than 90° but less than 180°.

Question 9.
a.

The type of angle in the above figure is obtuse angle.
An obtuse angle measures greater than 90° but less than 180°.

b.

The type of angle in the above figure is right angle.
A right angle measures exactly 90°.

Use the circle to answer the questions

Question 10.
Name the circle. _______________
The origin of a circle is a point inside the circle that is the same distance from any point on the circle. A circle is named by its origin.
In the above figure, Name the circle : X

Question 11.
Name the origin of the circle. _____________
The origin of a circle is a point inside the circle that is the same distance from any point on the circle.

Question 12.
Name a radius. _______________
Answer: $$\overline{XW}$$, $$\overline{XY}$$ or $$\overline{XZ}$$
A radius of a circle is a line segment with one endpoint at the circle.
In the above figure, Name the radius : $$\overline{XW}$$, $$\overline{XY}$$ or $$\overline{XZ}$$

Question 13.
Name a chord. ______________
Answer: $$\overline{RT}$$ or $$\overline{YZ}$$
A chord is a line segment with both endpoints on the circle.
In the above figure, Name the chord : $$\overline{RT}$$ or $$\overline{YZ}$$

Question 14.
Name a diameter. _______________
Answer: $$\overline{YZ}$$
A diameter is a chord that passes through the origin of the circle.
In the above figure, Name the diameter : $$\overline{YZ}$$

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