Supplementary and Complementary Angles Worksheets for Kids
Supplementary angles refer to a pair of angles whose sum equals 180 degrees. Complementary angles refer to a pair of angles whose sum is 90 degrees. In the given image, the supplementary angles add up to 180 degrees, and the complementary angles add up to 90 degrees.
Complementary Angles
Supplementary Angles
Questions:
1. Write down the measure of the angle represented in the image:
Complementary Angles
2. Drake added the angles 34 and 56 degrees. What type of angles are they based on their sum?
3. What is the sum of a pair of complementary angles?
4. Match the following images with their appropriate values:
5. Donald wants to find the measure of the angle which is added with 114 degrees. The sum of both angles is supplementary. What is Drake’s result?
6. Write down the measures in column B to make them supplementary.
7. Sam wants to find the value of x in the image. What’s the result?
Complementary angles
8. What is the sum of a pair of supplementary angles?
9. Fill in the column with the appropriate sign based on the measure of the unknown angles:
10. Rachel measured two angles as 34 degrees and 12 degrees. Check whether the angles are complementary.
11. Write down whether the pair of angles are supplementary or not:
12. Which angle should be added with 90 degrees to make them supplementary?
13. Write down the measure of the angles represented in the images:
14. Which of the angles is supplementary?
a. 45, 56 degrees
b. 140, 40 degrees
c. 56, 78 degrees
d. 120, 50 degrees
15. Write down the measures in column B to make them complementary.
Answers:
1.
The measure of the angle represented in the image is,
90- 45= 45 degrees.
2.
Drake added the angles, 34+56=90 degrees. They are complementary angles.
3.
The sum of a pair of complementary angles is 90 degrees.
4.
5.
The angles are supplementary. The measure of the unknown angle is 180- 114= 66 degrees. Donald’s result is 66 degrees.
6.
7.
The measure of the unknown angle is 63+ x+ 20=90
x+83= 90
x= 90-83
x= 7 degrees
8.
The sum of a pair of supplementary angles is 180 degrees.
9.
10.
The sum of the angles measured by Rachel is 34+ 12= 46 degrees.
The sum is not equal to 90 degrees. Hence, the angles are complementary.
11.
12. The angle added with 90 degrees with the existing 90 degrees will make them supplementary.
13.
14.
a. The angles 140 and 40 are supplementary.
15.
Importance of Complementary and Supplementary Angles Worksheets
The students of KG-3 will be able to understand the topic very easily with the help of the worksheets in the best way. The worksheets have been designed by experts to make sure that students have all the materials for learning the concepts easily.
Students will gain a better understanding of the topic of angles with the help of these worksheets. They can use the questions to gain a better understanding and solve the questions properly.
With the help of the worksheets, the students of Class 3 will gain a proper understanding of the concept of angles. This will help them understand the concepts of geometry as well. Hence, they can get a better understanding of the chapter in the best way.
Solving questions of different kinds related to the topic of angles will enable students to understand how to solve the questions in exams as well. Thus, they will be able to prepare for their exams in the best way.
Benefits of Worksheets for Supplementary and Complementary Angles
The worksheets for complementary and supplementary angles have been designed by experts at Vedantu in order to make sure that students are able to learn the concept easily. Hence, they will be able to understand the chapter easily.
The worksheets contain important questions from the exam point of view. Thus students can learn a lot about the examination pattern and use the worksheets to prepare for their tests and examinations.
Every single worksheet contains solutions to all the questions. Hence, students can download and practise the solutions to clear any doubts that they might have about the chapter.
These worksheets will help children complete the chapter in a very short period of time. They can get proper insights about the chapter and hence complete their syllabus easily as well.
Get proper preparation and revision time with the worksheets. You can use the worksheets to score good marks in the examination.
Download Angles Worksheet for Class KG-3 for Free
If you want to learn about angles, download the Complementary Supplementary and Vertical Angles Worksheet right now from Vedantu. Download the resources and get easy explanations of the topics and learn the chapter.
FAQs on Supplementary and Complementary Angles Worksheets for Kids
1. What are complementary angles?
Two angles are defined as complementary when their measures add up to exactly 90 degrees. For example, if one angle is 40°, its complement is 50° because 40° + 50° = 90°. When placed adjacent to each other, they form a right angle.
2. What are supplementary angles?
Two angles are considered supplementary if their measures add up to exactly 180 degrees. For instance, an angle of 130° and an angle of 50° are supplementary because their sum is 180°. When placed together on a line, they form a straight angle.
3. What is the main difference between complementary and supplementary angles?
The key difference lies in the total sum of the angles.
- Complementary angles add up to 90° (forming a right angle).
- Supplementary angles add up to 180° (forming a straight angle).
4. How do you find the complement or supplement of a known angle?
This involves simple subtraction, a core skill that worksheets on this topic help to develop.
- To find the complement, you subtract the given angle from 90°. (Example: The complement of 25° is 90° - 25° = 65°).
- To find the supplement, you subtract the given angle from 180°. (Example: The supplement of 110° is 180° - 110° = 70°).
5. Why are worksheets useful for learning about complementary and supplementary angles?
Worksheets provide structured practice that is essential for mastering this topic. They help students to:
- Perform repeated calculations to find missing angles, which builds speed and accuracy.
- Visually identify angle pairs in different geometric figures.
- Apply the rules of 90° and 180° in various problem types.
- Build a strong conceptual foundation for more advanced geometry topics as per the CBSE/NCERT curriculum.
6. Can two obtuse angles ever be supplementary? Explain why.
No, two obtuse angles can never be supplementary. By definition, an obtuse angle is greater than 90°. The sum of two angles that are each greater than 90° will always be more than 180°. For example, if we take the smallest possible whole-number obtuse angles, 91° and 91°, their sum is 182°, which is already greater than 180°.
7. Do supplementary angles always have to be next to each other?
No, this is a common misconception. Angles do not need to be adjacent (next to each other) to be supplementary. The only condition is that their measures must add up to 180°. For instance, a 60° angle in one triangle and a 120° angle in a separate circle are still a supplementary pair. When they are adjacent on a straight line, they are called a linear pair, which is a specific type of supplementary angle pair.
8. Where can kids see examples of these angles in the real world?
These geometric concepts are visible in everyday objects.
- Complementary Angle Examples: The corner of a TV screen, a square tile, or the intersection of a vertical and horizontal line in a window pane all form 90° angles.
- Supplementary Angle Examples: The two angles on either side of a straight road intersected by a railway track, or the blades of an open pair of scissors forming a straight line.
