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.
Answer:
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 _____________
Answer: 2
A rhombus has two pairs of parallel sides and four equal sides.
Question 3.
rectangle trapezoid _____________
Answer: 4
A rectangle has four right angles, two pairs of parallel sides, and two pairs of equal sides.
Question 4.
trapezoid _____________
Answer: 3
A trapezoid has only one pair of parallel sides.
Question 5.
parallelogram _____________
Answer: 1
A parallelogram has 4 sides, and both sets of opposite sides are parallel.
Identify the polygons.
Question 6.
a.
Answer: Rectangle
A rectangle has four right angles, two pairs of parallel sides, and two pairs of equal sides.
b.
Answer: Triangle
A polygon with three sides is called a triangle.
Question 7.
a.
Answer: Square
A square is a rectangle with four equal sides.
b.
Answer: Hexagon
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.
Answer: 25 degrees
The type of angle in the above figure is acute angle.
An acute angle measures less than 90°.
b.
Answer: 140 degrees
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.
Answer: 150 degrees
The type of angle in the above figure is obtuse angle.
An obtuse angle measures greater than 90° but less than 180°.
b.
Answer: 90 degrees
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. _______________
Answer: X
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. _____________
Answer: X
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 : \(\overline{YZ}\)