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Angle Between a Line and a Plane

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Last updated date: 17th Apr 2024
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Basics to Find the Angle Between Line and Plane

In geometry, a line and an angle are used with different meanings. A line in geometry is a set of closely arranged points that extend lengthwise in both directions. When a set of lines are arranged adjacent to each other, a plane is obtained. A plane is a geometric surface that has two dimensions. The line has only one dimension which is measured in terms of length whereas a plane is a two-dimensional surface measured in terms of length and width. When a line is an incident on a plane, it forms an angle with the plane at the point of contact. This angle is said to be the angle between a line and a plane.

Introduction to Angle Between a Line and a Plane

The angle between a line and a plane is the angle formed by the intersection of these two geometric objects. To measure this angle, use a protractor. The measurement will be in degrees and it is important to know the trigonometric functions to find this angle.


Studying geometry can be a great way to improve your math skills. The more you know about how shapes and angles interact with each other, the easier it will be for you when answering questions on geometry tests. In this blog post, we are going to discuss 7 tips that will help you study the angle between line and plane in preparation for your next test!

Importance of Studying Angle Between a Line and a Plane

The angle between a line and a plane is an important topic because it comes up often in geometry questions. You will likely be asked to find the angle between two lines, or the angle between a line and a plane, on your next test.


By studying this concept, you will be able to answer these types of questions quickly and easily. In addition, having a strong understanding of angles will help you with other geometric concepts such as slope and distance.

Here are Some Tips to Study Angle Between a Line and a Plane

Tip 01: Draw a picture. One of the best ways to understand a concept is to draw a picture of it. When you are studying the angle between line and plane, try drawing a diagram that illustrates how the two shapes interact. This will help you better visualize the concepts involved and make it easier for you to remember them.


Tip 02: Watch out for "between". Notice that the word between is used to describe where an angle sits. This can be confusing at times, as you might expect a single dimension from two different parts of line and plane. For example, if we say that point P is located on line segment AB "between A and B", this means that P is between A and B, not on one of them.


Tip 03: Memorize the definition. There are many different definitions for angle between a line and a plane . Make sure to commit it to memory so you don't have any trouble recalling it when needed!


Tip 04: Practice makes perfect. Studying angles between a line and a plane is not as straightforward as learning about other geometry concepts. This makes it difficult to practice on your own, but this difficulty can be overcome if you study with the help of others or use online resources such as Khan Academy.


Tip 05: Know what's being asked. One important thing to keep in mind when studying angle between line and plane is that not all questions will ask about the same thing. Make sure you understand what the question is asking so you can provide the correct answer.


Tip 06: Use common sense. When working on geometry problems, it's important to use your common sense in order to arrive at the correct solution. If you find yourself struggling, take a step back and try asking yourself what the question is really asking. Sometimes it's easy to get lost in all of the technical jargon!


Tip 07: Learn from your mistakes. The more times you make the same mistake when studying the angle between line and plane, the less likely you are to remember how to solve the problem. Remember that if a question stumps you, there's always another chance to practice it at a later time!

FAQs on Angle Between a Line and a Plane

1. How Do You Find the Angle Between a Line and a Plane?

A line is a single dimension geometric shape. Length is the only dimension that describes a line. A plane is a two-dimensional geometric figure that can be described in terms of length and width. When a line is an incident on the plane at a certain angle of inclination, this angle of inclination gives the angle between the line and a plane. To calculate the angle between a line and a plane a normal is drawn perpendicular to the plane at the point of contact with the line. The angle between the line and the plane is calculated as the complement of the angle between the line and the normal drawn to the plane. The angle between line and plane formula is:

2. Is Planar Geometry and Solid Geometry the Same?

No, planar geometry and solid geometry are entirely two different perceptions of an object. Planar geometry describes any object only in two dimensions in terms of its length and width. However, solid geometry describes the object in 3 dimensions. It gives the position of the object with respect to space in terms of length, width, and height. Planar geometry deals with flat objects such as triangles, circles, quadrilaterals, and other polygons. Solid geometry deals with the study of 3-dimensional shapes such as cubes, cuboids, spheres, prisms, pyramids, cones, cylinders, etc.

3. What type of questions can come in exams from this concept and in which form?

Here are some examples of questions that come from studying angle between line and plane:


"What is the measure of ∠AOP?" This question asks about the numerical value for an angle. Be sure to know which trigonometric functions can help you find this number!


"Is it possible for two lines in a plane to form more than one vertex at a time? Why or why not?" Sometimes, multiple angles can exist on vertices formed by different parts of the lines involved. Make sure you're familiar with how these angles work together!

4. How much time does it take to complete the topic to prepare for exams?

It completely depends on the person. Some students might take days whereas some might require weeks or months to revise and practice for exams. However, it is always advisable that you start early and gradually increase the time frame as you get nearer to your exams date.

5. What is the best way to get help?

There are many ways in which you can get help while studying the angle between line and plane. You can ask teachers, classmates, or friends for assistance. If you're struggling with a particular problem, there are also online resources available that can walk you through the steps needed to arrive at the correct solution. Just be sure to use reputable sources.

6. Will I be able to solve the topic completely if I skip it?

No, you won't and therefore skipping this topic can cost you negatively in exams as (Angle between a line and a plane) is an important concept of geometry that follows from its fundamentals. It helps students understand how lines intersect with planes, which then leads to further topics such as perpendicular lines or polygons. Skipping the studying angle between line and plane will definitely have an impact on your exam results so avoid at any cost!

7. How much does learning geometry affect my score compared to other topics? Can I attempt geometry first instead of other difficult topics?

It is difficult to generalize as different students might have different strengths and weaknesses. However, from a practical standpoint, geometry is one of the easier topics in mathematics. You are likely to get more marks by attempting geometry first rather than other topics that may be more difficult for you. This is because there will be a higher chance of success if you attempt a topic that comes easily to you instead of struggling with multiple topics at once.