Construct the following angles using ruler and compass and verify by measuring them by a protractor.

15^o

Steps of construction:

Step 5: Draw a ray OA.

Step 6: With its initial point O as centre and any radius, draw an arc, cutting OA at C.

Step 7: With centre C and same radius (as in step 2). Draw an arc, cutting the arc of step 2 in D.

Step 8: With C and D as centres, and any convenient radius (more than CD), draw two arcs intersecting at B. join OB. Then ∠AOB = 30°

Step 9: Bisect ∠AOB intersecting at D.

Thus ∠ AOD is required angle.

Verification:

On measuring ∠AOB, with the protractor,

we find ∠ AOB = 15°.

Thus ∠AOD = 15°