Question
Construct the 90° angle, using ruler and a pair of compass only.

Answer

Steps of Construction:
To construct an angle of 90°.
  1. With O as a center, draw an arc to cut OA at B.
  2. With B as a centre, draw the same size arc to cut the previous arc at C.
  3. Again with C as centre and with the same radius, draw one more arc to cut the first arc at D.
  4. With C and D as centres, draw two arcs of equal radii to cut each other at point E.
  5. Join O and E, Then, ∠AOE = 90°.

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