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If available, a protractor or a right drawing triangle can be used. If restricted to ruler and compass, a right angle can also be constructed to a given line segment by drawing a circle, with a radius less than the length of the line segment but more than half that length, with each end of the line segment as a center and connecting the two points of intersection of the two circles above and below the line. The line connecting to two intersections of these circles will form as right angle to the line segment.

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Q: What tool do use to layout a 90 degrees angle?
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What is used to measure a angle?

the unit used to measure angle is degree. It is also measured in radians.


When you use the protractor do you use the top numbers or the bottom numbers?

You use both. An acute angle [ /_ or _\] is less than 90 degrees - directly on top. An obtuse angle is [ \_ or _/ ] is greater than 90 degrees. You use both. An acute angle [ /_ or _\] is less than 90 degrees - directly on top. An obtuse angle is [ \_ or _/ ] is greater than 90 degrees. You use both. An acute angle [ /_ or _\] is less than 90 degrees - directly on top. An obtuse angle is [ \_ or _/ ] is greater than 90 degrees. You use both. An acute angle [ /_ or _\] is less than 90 degrees - directly on top. An obtuse angle is [ \_ or _/ ] is greater than 90 degrees.


How you can tell when a angle is 200 degrees?

There are special angle-measuring instruments which you can use to measure the angle.


Can you make a supplementary angle out of 3 angles?

you can use up to 2 angles in a supplementary angle. Just find 2 angles to fit into 180 degrees.


What is the reference angle for -140 degrees?

in order to find the reference angle, an angle less than or equal to 90 degrees formed by the x-axis and the terminal side of an angle, one needs to first find what quadrant on the coordinate plane the angle belongs to. The negative (-) sign in -140 refers to the direction 360 degree turn begins at (and therefore the quadrant it begins at). Instead of taking the regular backwards "C", counterclockwise direction, the turn begins clockwise. To convert it, simply add 360 degrees, to get 220 degrees, an angle in the third quadrant. These are the guidelines to follow when finding reference angles: If angle, A, is in first quadrant then the reference angle will be itself as it is already 90 degrees or under. If angle, A, is in second quadrant then the reference angle will be 180 - A . If angle, A, is in third quadrant then the reference angle will be A - 180 . If angle, A, is in fourth quadrant then the reference angle will be 360 - A " These subtractions are all in reference to the nearest angle of a quadrant and are in degrees. Being in the third quadrant, take the angle, A, and subtract 180 from it to get: 220 - 180 = 40 Thus, the reference angle for -140 degrees is 40 degrees. Follow the same directions for other angles, first determining whether the angle needs to be converted into a positive value (counterclockwise), then locate the quadrant and use the rules above for the specific angle(s) being looked at and asked for.

Related questions

What is used to measure a angle?

the unit used to measure angle is degree. It is also measured in radians.


When you use the protractor do you use the top numbers or the bottom numbers?

You use both. An acute angle [ /_ or _\] is less than 90 degrees - directly on top. An obtuse angle is [ \_ or _/ ] is greater than 90 degrees. You use both. An acute angle [ /_ or _\] is less than 90 degrees - directly on top. An obtuse angle is [ \_ or _/ ] is greater than 90 degrees. You use both. An acute angle [ /_ or _\] is less than 90 degrees - directly on top. An obtuse angle is [ \_ or _/ ] is greater than 90 degrees. You use both. An acute angle [ /_ or _\] is less than 90 degrees - directly on top. An obtuse angle is [ \_ or _/ ] is greater than 90 degrees.


How do you use a trigonometric chart with the angle of 80 degrees?

you could use 160 degrees which will be in the tables and use the half angle formula


How do you Identify the angles degrees?

a right angle is 90 degrees a straight angle is 180 degrees you could also use a anglicize


Which tool you use in pipe 60 deg layout for pipe fitting?

Swansons square


What is the use of projector?

to find the degrees of an angle


WHAT ARE THE units use in measuring the angle?

degrees


How you can tell when a angle is 200 degrees?

There are special angle-measuring instruments which you can use to measure the angle.


What is it called when an angle goes past 360 degrees?

There is not a special name. You simply use the name for the angle which is left after you subtract 360 degrees from the angle.


How many degrees in angles?

it depends on the angle. Right angles always have 90 degrees. You can use a protractor to measure the angle


How many angles you use in geometry?

Common types are right angle (90 degrees), obtuse angle (more than 90 degrees) and acute angle (less than 90 degrees).


How do you use the word reflex angle in a sentence?

angle greater than 180 degrees