Both lines & angles are two different terms.
The line means a straight part of a line. In contrast, an angle means the sequence between two lines.
Line segment
The term 'line segment' means a line that includes two endpoints. One endpoint is present at the beginning, and the other is at the end.
Ray
The meaning of ray is a line in which only there is a single endpoint.
Angle
When the initial point of two rays intersects at a single point, it forms an angle.
Types of Angles
Different types of angles are there that contain different meanings. Each type of angle is discussed below:
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Acute angle:
It is a type of angle that is smaller than 90°.
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Right angle:
It is a type of angle that always makes a 90° angle.
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Straight angle:
One of the angles is a straight angle that is always equal to a 180° angle.
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Adjacent angle:
The adjacent angle is a type of angle that consists of common vertices.
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Obtuse angle:
Such types of angles always lie between 90° and 180°.
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Reflex angle:
This angle is always greater than 180°.
Lines and Angles Sample Questions for Class 7
Question 1
Statement 1 : Co interiors an also be equal.
Statement 2 : Sum of alternate interior angles can be 180°.
Which statement is true?
A. Statement 1
B. Statement 2
C. Both
D. Cannot Say
Question 2
A angle is four times its complement. What is its supplement?
A. 100°
B. 162°
C. 125°
D. 108°
Question 3
In the given figure which angle is vertically opposite to angle POS?
A. ROQ
B. ROS
C. QOP
D. No angle is vertically opposite to POS
Question 4
The two supplementary angles are in ratio 5:4. What is the complementary angle of the smaller angle?
A. 10°
B. 20°
C. 70°
D. 60°
Question 5
In the given figure angle DOB is 45°. What is the measure of angle AOC and AOD?
A. AOC = 55°, AOD = 125°
B. AOC = 50°, AOD = 130°
C. AOC = 40°, AOD = 140°
D. AOC =45°,AOD =135°