1/4 putaran searah jarum jam =.... derajat

1/4 putaran = 90°
Karena,
1/4 x 360°
= 90°

1/4 putaran searah jarum jam
1 putaran serah jarum jam = 360 derajat

1/4 putaran
= 1/4 × 360 derajat
= 90 derajat