Math in Focus Grade 7 Chapter 6 Answer Key Angle Properties and Straight Lines

Practice the problems of Math in Focus Grade 7 Workbook Answer Key Chapter 6 Angle Properties and Straight Lines to score better marks in the exam.

Math in Focus Grade 7 Course 2 B Chapter 6 Answer Key Angle Properties and Straight Lines

Math in Focus Grade 7 Chapter 6 Quick Check Answer Key

Tell whether each angle is an acute, right, obtuse, or straight angle.

Question 1.
Math in Focus Grade 7 Chapter 6 Answer Key Angle Properties and Straight Lines 1
Answer:
Right angle triangle.

Explanation:
A right-angled triangle is a triangle with one of the angles as 90 degrees.

Question 2.
Math in Focus Grade 7 Chapter 6 Answer Key Angle Properties and Straight Lines 2
Answer:
Acute angle triangle.

Explanation:
An acute-angled triangle is a type of triangle in which all the three internal angles of the triangle measures less than 90°.

Question 3.
Math in Focus Grade 7 Chapter 6 Answer Key Angle Properties and Straight Lines 3
Answer:
90° < 154° < 180° We have
The given angle is obtuse because Its measure is greater than 90°, but Less than 180°.
obtuse

Question 4.
Math in Focus Grade 7 Chapter 6 Answer Key Angle Properties and Straight Lines 4
Answer:
straight angle.

Explanation:
The 180-degree angle is known as a straight angle. The sides of the angle are opposite to each other and they make a straight angle.

Question 5.
m∠w = 86°
Answer:
Acute angle

Explanation:
Math-in-Focus-Grade-7-Chapter-6-Answer-Key-Angle-Properties-and-Straight-Lines-5

Question 6.
m∠y = 90°
Answer:
Right angle triangle.

Explanation:
Math-in-Focus-Grade-7-Chapter-6-Answer-Key-Angle-Properties-and-Straight-Lines-6

Identify each pair of parallel line segments.

Question 7.
Math in Focus Grade 7 Chapter 6 Answer Key Angle Properties and Straight Lines 5
Answer:
RSUT

Explanation:
The lines will not meet each other at any point in the given figure. Hence parallel line will never intersect.

Question 8.
Math in Focus Grade 7 Chapter 6 Answer Key Angle Properties and Straight Lines 6
Answer:
WXZY

Explanation:
The lines that do not intersect or meet each other at any point in a plane. Parallel lines will never intersect.

Identify each pair of perpendicular line segments.

Question 9.
ABCD is a rectangle.
Math in Focus Grade 7 Chapter 6 Answer Key Angle Properties and Straight Lines 7
Answer:
There are four right angles, and 2 pairs of perpendicular lines.

Explanation:
A rectangle has lines that are perpendicular to two other lines and it also has four right angles.

Question 10.
Math in Focus Grade 7 Chapter 6 Answer Key Angle Properties and Straight Lines 8
Answer:
The given figure is a right-angle triangle and has two perpendicular lines.

Explanation:
A triangle has three sides and three angles. Only one type of triangle is a right-angle triangle that has two perpendicular line segments.

Question 11.
Math in Focus Grade 7 Chapter 6 Answer Key Angle Properties and Straight Lines 9
Answer:
The given figure has two perpendicular line segments.

Explanation:
Perpendicular lines are lines, segments that intersect to form right angles.

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