Construction of a 90 Degree Angle

# Construction of a 90 Degree Angle Video Lecture - Class 6

## FAQs on Construction of a 90 Degree Angle Video Lecture - Class 6

 1. How do you construct a 90 degree angle?
Ans. To construct a 90 degree angle, you will need a ruler and a compass. Here are the steps: 1. Draw a straight line segment using a ruler. 2. Place the compass on one end of the line segment and draw an arc that intersects the line. 3. Without changing the compass width, place the compass on the other end of the line segment and draw another arc. 4. Use a ruler to draw a straight line connecting the two points where the arcs intersect. 5. The angle formed by the line segment and the new line is a 90 degree angle.
 2. What tools are needed to construct a 90 degree angle?
Ans. To construct a 90 degree angle, you will need a ruler and a compass. The ruler is used to draw a straight line segment, and the compass is used to draw the arcs that intersect the line segment and form the angle.
 3. Can I use a protractor to construct a 90 degree angle?
Ans. No, a protractor is not used to construct a 90 degree angle. A protractor is a tool used to measure angles, not to construct them. To construct a 90 degree angle, you need to use a ruler and a compass.
 4. Why is it important to construct a 90 degree angle accurately?
Ans. Constructing a 90 degree angle accurately is important because it is a fundamental angle in geometry. Many geometric constructions and measurements rely on the accuracy of a 90 degree angle. If the angle is not constructed correctly, it can lead to errors in subsequent calculations or constructions.
 5. Are there any shortcuts or alternative methods to construct a 90 degree angle?
Ans. Yes, there are alternative methods to construct a 90 degree angle. One method is to use a right angle triangle. By using the Pythagorean theorem, you can construct a right angle triangle with sides in the ratio of 3:4:5. Another method is to use a set square or a carpenter's square, which already has a 90 degree angle built-in. These alternative methods can be useful if you do not have a compass or if you need to construct a 90 degree angle quickly.
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