How do you construct an 80 degree angle with a protractor?

By joining O and X we get bisector of ∠AOB .

1. Let ray OC be the bisector of ∠ BOA , then ∠ COA = 21​∠ BOA = 21​×80∘=40∘ .
2. With Q as center and radius equal to PQ , draw an arc to cut the extended arc PQ at R .
3. ∠ EOA = ∠ EOB + ∠ BOA = 21​∠ DOB + ∠ BOA = 21​(80)∘+80∘=40∘+80∘=120∘

How do you draw a protractor step by step?

3 Method 3 of 3: Drawing a Protractor

1. Use a ruler to draw a horizontal line. Draw a line on a piece of paper that is 5 inches long.
2. Draw a half circle with a compass.
3. Fold a square piece of paper to create angle measurements.
4. Mark the angles on your protractor.
5. Cut out your protractor.
6. Measure angles.

What angle is 80 degree?

acute angle-an angle between 0 and 90 degrees. right angle-an 90 degree angle. obtuse angle-an angle between 90 and 180 degrees.

How do you draw a 82 degree angle with a compass?

Draw a circle of radius R ( example R= 10 cm) and draw a diametre line Horizontally. Draw a parallel to the diametre from the top point of the vertical line, to intersect the circle. Draw a line from the centre to that point: the 82 degree is the angle formed by this radius and the diametre line.

How do you construct a 75 degree angle?

How to Construct 75 degree Angle

1. Step 1: Draw a line segment with endpoint O and A.
2. Step 2: Draw an arc with O as centre cutting the line segment OA at point B with a compass.
3. Step 3: Keeping the radius same, Draw an arc with B as centre cutting the arc at C.

How do you draw a 82 degree?

How do you construct an 84 degree angle with a compass?

You can’t really construct an 84° with just a compass and straight edge. Then you can combine any combination of the above angles. But no combination of the above angles will equal exactly 84°. Without getting too carried away, the nearest you could get is 90° – 5.625° = 84.375°.