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What can I use instead of a protractor?

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What can I use instead of a protractor?

Top Alternatives to Protractor

  • Selenium. Selenium automates browsers.
  • PhantomJS. PhantomJS (www.phantomjs.org) is a headless WebKit scriptable with JavaScript.
  • WebdriverIO. WebdriverIO lets you control a browser or a mobile application with just a few.
  • Jasmine.
  • Compass.
  • Cypress.
  • Cucumber.
  • Puppeteer.

How do you find the measure of an unknown angle?

To determine to measure of the unknown angle, be sure to use the total sum of 180°. If two angles are given, add them together and then subtract from 180°. If two angles are the same and unknown, subtract the known angle from 180° and then divide by 2.

How do you find an angle without a degree?

Find the missing angle by subtracting the sum of the two angles from 180.

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How do you make a homemade protractor?

2 Method 2 of 3: Making a Pocket Protractor

  1. Cut a sheet of paper into a square.
  2. Fold the paper in half.
  3. Fold the upper right corner into a triangle.
  4. Fold the bottom right corner up to form a second triangle.
  5. Fold the bottom left corner up.
  6. Label the angles on your protractor.

How do you use a protractor without a protractor?

Bisecting angles without a protractor

  1. Place the compass on the vertex of the angle (point B). Draw an arc across each arm of the angle.
  2. Place the compass on the point where one arc crosses an arm and draw an arc inside the angle.
  3. Use a ruler to join the vertex to the point where the arcs intersect (D).

How do I figure out angles?

The formula for finding the total measure of all interior angles in a polygon is: (n – 2) x 180. In this case, n is the number of sides the polygon has. Some common polygon total angle measures are as follows: The angles in a triangle (a 3-sided polygon) total 180 degrees.

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What tool do you use to find angles?

GemRed 82305 Digital Angle Finder Protractor (Stainless steel, 7inch/200mm)

Is there a protractor app?

Protractor helps you to measure angles quickly and easily. This app turn your iPhone into a handy pocket protractor that can measure angles in both degrees and radians.

How can I measure without a protractor?

Acute. Draw a vertical line connecting the 2 rays of the angle. To determine the number of degrees in an acute angle, connect the 2 rays to form a triangle. Line up the short end of your ruler with the bottom ray, then draw a vertical line intersecting the other ray using the long side of your ruler.

How do you measure a triangle with a protractor?

Align the horizontal edge of the protractor with the base of the triangle. Place the center point of the protractor on the vertex of the angle. Follow the side of the triangle until it reaches the angle measurement mark.

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How do you find a missing angle of a polygon?

To find the missing angle, sum up the given angles and subtract it from the sum of interior angles. Each polygon worksheet has 12 problems finding exterior angle of regular polygon. To find exterior angle, divide 360o by number of sides of a polygon.

What tool is used to measure angles?

Some tools used to measure angles include protractors, transit levels, speed squares and bevel protractors. Protractors have a straight edge with ruler markings and a semicircular top that students use to measure angles by aligning the lines of triangles with the degrees marked on the circular edge.

How do you use a protractor to draw a triangle?

The easiest way is to use a protractor to draw three 120° angles around the center of the circle, and then connect the three points on the circle where the three angles intersect the circumference. That will result in an inscribed equilateral triangle.