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

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Question 1.  Identify the following polygons. Write the number that refers to the correct figure. Question 2.
parallelogram ______________
Parallelogram – A quadrilateral with both sets of opposites sides parallel.
In the above polygons, figure 2 represents the parallelogram.

Question 3.
pentagon ______________
Pentagon – A polygon with 5 sides
In the above polygons, figure 1 represents the pentagon.

Question 4.
hexagon ______________
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.  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. The type of angle in the above figure is right angle.
A right angle measures exactly 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 7.
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°.

Use the circle to answer the questions. Question 8.
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 : S

Question 9.
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.
In the above figure, Name the origin : S

Question 10.
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 : $$\overline{VW}$$

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