问题
填空题
12时分针和时针是______角,8时是______角.
答案
(1)360°÷60×60,
=6°×60,
=360°,
360°的角是周角.
答:12时分针和时针是周角.
(2)360°÷60×20,
=6°×20,
=120°,
120°的角是钝角.
答:8时分针和时针是钝角.
故答案为:周,钝.
12时分针和时针是______角,8时是______角.
(1)360°÷60×60,
=6°×60,
=360°,
360°的角是周角.
答:12时分针和时针是周角.
(2)360°÷60×20,
=6°×20,
=120°,
120°的角是钝角.
答:8时分针和时针是钝角.
故答案为:周,钝.