This handy Spectrum Math Grade 4 Answer Key Chapter 8 Pretest provides detailed answers for the workbook questions.

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Identify the angles given.

Question 1.
a. angle ____________ Explanation:
In the above image we can observe two angles. The First angle LMN is denoted as ∠LMN. The second angle NML is denoted as ∠NML.

b. angle _____________ Explanation:
In the above image we can observe two angles. The First angle QRS is denoted as ∠QRS. The second angle SRQ is denoted as ∠SRQ.

Draw each type of line.

Question 2.
a. parallel Explanation:
In the above image we can observe two parallel lines. The lines are named as AB and CD. Lines AB and CD are not intersecting at any point and are always the same distance apart. Hence those lines are called as parallel lines.

b. perpendicular Explanation:
In the above image we can observe perpendicular lines. The Lines AB and CD are intersecting and forming a right angle at their intersection. Hence those two lines are perpendicular to each other.

c. intersecting Explanation:
In the above image we can observe intersecting lines. The Lines AB and CD are intersecting at the common point E.

Draw the line (or lines) of symmetry for each figure.

Question 3.
a.  Explanation:
In the above image we can observe a hexagon. The hexagon has four lines of symmetry.

b.  Explanation:
In the above image we can observe a circle. The circle has four lines of symmetry.

c.  Explanation:
A trapezoid has four sides. One pair of opposite sides are parallel. An isosceles trapezoid has one line of symmetry.

d.  Explanation:
In the above image we can observe a square. The square has four lines of symmetry.

Question 4. Explanation:
A rectangle is a quadrilateral having four sides and four right angles. The opposite sides of rectangle are equal and parallel to each other.

Identify the triangle.

Question 5. 