This handy Math in Focus Grade 4 Workbook Answer Key Chapter 10 Practice 3 Horizontal and Vertical Lines detailed solutions for the textbook questions.
Math in Focus Grade 4 Chapter 10 Practice 3 Answer Key Horizontal and Vertical Lines
Answer the questions.
Question 1.
\(\overline{A B}\) is perpendicular to \(\overline{B C}\).
If \(\overline{A B}\) is a vertical line segment, what do you know about \(\overline{B C}\)?
Answer:
AB is a vertical line segment and BC is horizontal line segment.
Question 2.
a. \(\overline{D E}\) is a vertical line segment. Draw a horizontal line segment through point D and label it \(\overline{D F}\).
Answer:
Drawn a horizontal line segment through point D and label it as DF.
b. What do you know about the angle formed by \(\overline{D E}\) and \(\overline{D F}\)?
Answer:
The angle formed by DE and DF is 90°.
Complete.
Question 3.
a. \(\overline{M N}\) is a horizontal line segment. Draw a vertical line segment through point O to meet \(\overline{M N}\) and label the point P.
Answer:
b. What do you know about \(\overline{M N}\) and \(\overline{O P}\)?
Answer:
MN is a horizontal line segment and OP is a vertical line segment.
c. How many right angles are formed by \(\overline{M N}\) and \(\overline{O P}\)?
Answer:
Two right angles are formed by MN and OP.
Question 4.
a. \(\overline{P Q}\) is a horizontal line segment.
Draw a vertical line segment at point P.
Name it \(\overline{P R}\). Then draw a vertical line segment at point Q.
Name it \(\overline{Q S}\).
Answer:
Drawn a vertical line segment at point P and named it as PR.
Drawn a vertical line segment at point Q and named it as QS.
b. What do you know about \(\overline{P R}\) and \(\overline{Q S}\)? Check with a drawing triangle and a straightedge.
Answer:
Both PR and QS are parallel to each other.
Complete.
Question 5.
a. \(\overline{A B}\) is a horizontal line segment and \(\overline{C D}\) is a vertical line segment. At point D, draw a line segment parallel to \(\overline{A B}\). Name it \(\overline{D E}\).
Answer:
At point D, drawn a line segment parallel to AB and named it as DE.
b. What do you know about \(\overline{C D}\) and \(\overline{D E}\)?
Answer:
Both CD and DE are perpendicular to each other.
Complete.
Question 6.
ABCD is a whiteboard fixed to the wall.
Name the vertical and horizontal line segments on the whiteboard.
Vertical line segments: ____
Horizontal line segments: ____
Answer:
Vertical line segments: BA and CD
Horizontal line segments: AD and BC