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What is the reference angle for 205?

Joe Ford

What is the reference angle for 205?

25° angle

How do you construct an angle?

Constructing Angles of 60º, 120º, 30º and 90º

  1. Step 1: Draw the arm PQ.
  2. Step 2: Place the point of the compass at P and draw an arc that passes through Q.
  3. Step 3: Place the point of the compass at Q and draw an arc that passes through P. Let this arc cut the arc drawn in Step 2 at R.

How do you construct a 100 degree angle?

using standard procedure. You could construct a big right angle triangle with one side as 1 and the hypotenuse as 2. Divide the smallest edge into 3 equal parts. Join the opposite edge with the divided parts.

How do you construct an angle of 110 degrees?

Answer

  1. Draw a line segment PQ.
  2. Keeping your compass wide open with the same length, draw an arc S on AB.
  3. Bisect the 60° angle and name the point of intersection as J.
  4. Join the arc J to A, which will give Angle JAB which is equal to 20°.
  5. Now draw a perpendicular line AD on line segment PQ from point A.
  6. Angle JAB = 20°

How do you construct a 147 degree angle?

Answer

  1. draw a line OA.
  2. using protractor and center ‘o’ draw an angle AOB =147°.
  3. Now taking ‘o’ as center and any radius draw a arc that intersects ‘OA’ and ‘OB’ at p and q.
  4. now take p and q as centers and radius more than half of PQ, draw arcs.
  5. both the arcs intersect at ‘R’
  6. join ‘OR’ and produce it.

How do you use a protractor to measure an angle?

How to measure an angle with a protractor:

  1. Place the midpoint of the protractor on the VERTEX of the angle.
  2. Line up one side of the angle with the zero line of the protractor (where you see the number 0).
  3. Read the degrees where the other side crosses the number scale.

How do you bisect an angle?

Construction: bisect ∠ABC.

  1. STEPS:
  2. Place compass point on the vertex of the angle (point B).
  3. Stretch the compass to any length that will stay ON the angle.
  4. Swing an arc so the pencil crosses both sides (rays) of the given angle.
  5. Place the compass point on one of these new intersection points on the sides of the angle.

How do you bisect an angle of 75 degrees?

(i) Draw a line segment BC. (ii) At B, draw an angle ABC equal to 75°. (iii) With centres P and T, draw arcs intersecting each other at L. (iv) Join BL and produce it to D.

How do you bisect a 70 degree angle?

put an arc on line AB & on BC off same distance name as P & Q . Then, take arc from P & Q , this arc intersect at one point as O. Join point B & O and extend the line . Hence, the angle of 70 degree is bisected.

How do you bisect a 120 degree angle?

Steps of Construction :

  1. Draw an angle of ∠AOB of 120°.
  2. Draw an arc from point O. This arc will cut the ray OA at any point C and ray OB at any point D.
  3. Draw two arcs of the same radii from the points C and D as centres.
  4. Join the point O to the point M by a ray OM.
  5. m∠AOM = m∠BOM =

How do you bisect a 105 degree angle?

Expert Answer:

  1. draw 120 degree angle.
  2. then draw 90 degree angle.
  3. the angle between the two rays will be 30 degree, draw the angle bisector.
  4. now 90 + 15 = 105.

How do you construct a 125 degree angle?

Answer. draw an angle of 135° with help of compass than with same radius cut an arc from 135° and one from 120°.

Which angle is 125 degree?

Obtuse – any angle which measures more than 90 degrees but less than 180 degrees. These are “fat” angles that are very wide. Sample: angle DEF measures 125 degrees. Then angle DEF is obtuse.