Practice with the help of Spectrum Math Grade 5 Answer Key Chapter 9 Posttest regularly and improve your accuracy in solving questions.
Spectrum Math Grade 5 Chapter 9 Posttest Answers Key
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Circle all the quadrilaterals.
Question 1.
Answer:
A quadrilateral has 4 sides.
Identify the following polygons. Write the number that refers to the correct figure.
Question 2.
parallelogram ______________
Answer: 2
Parallelogram – A quadrilateral with both sets of opposites sides parallel.
In the above polygons, figure 2 represents the parallelogram.
Question 3.
pentagon ______________
Answer: 1
Pentagon – A polygon with 5 sides
In the above polygons, figure 1 represents the pentagon.
Question 4.
hexagon ______________
Answer: 3
Hexagon – A polygon with 6 sides
In the above polygons, figure 3 represents the hexagon.
Fill in the blanks to complete the hierarchy diagram.
Question 5.
Answer:
Polygon – A closed plane figure formed from line segments that meet only at their endpoints.
Quadrilateral – A four sided polygon.
Trapezoid – A quadrilateral with exactly one pair of parallel sides.
Parallelogram – A quadrilateral with both sets of opposites sides parallel.
Rectangle – A quadrilateral with two pairs of equal parallel sides and four right angles.
Square – A parallelogram with four equal sides and four right angles.
Rhombus – A parallelogram with all four sides equal in length.
Use a protractor to measure each angle. Then, label each angle right, acute, or obtuse.
Question 6.
a.
Answer: 90 degrees
The type of angle in the above figure is right angle.
A right angle measures exactly 90°.
b.
Answer: 160 degrees
The type of angle in the above figure is obtuse angle.
An obtuse angle measures greater than 90° but less than 180°.
Question 7.
a.
Answer: 40 degrees
The type of angle in the above figure is acute angle.
An acute angle measures less than 90°.
b.
Answer: 120 degrees
The type of angle in the above figure is obtuse angle.
An obtuse angle measures greater than 90° but less than 180°.
Use the circle to answer the questions.
Question 8.
Name the circle.
Answer: S
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 : S
Question 9.
Name the origin of the circle.
Answer: S
The origin of a circle is a point inside the circle that is the same distance from any point on the circle.
In the above figure, Name the origin : S
Question 10.
Name a radius.
Answer: \(\overline{ST}\), \(\overline{RS}\) or \(\overline{SV}\)
A radius of a circle is a line segment with one endpoint at the circle.
In the above figure, Name the radius : \(\overline{ST}\), \(\overline{RS}\) or \(\overline{SV}\)
Question 11.
Name a diameter.
Answer: \(\overline{RV}\)
A diameter is a chord that passes through the origin of the circle.
In the above figure, Name the diameter : \(\overline{RV}\)
Question 12.
Name a chord that is not a diameter.
Answer: \(\overline{VW}\)
A chord is a line segment with both endpoints on the circle.
In the above figure, Name the chord that is not a diameter : \(\overline{VW}\)