The first lessons in numbers : an illustrated table book, designed for elementary instruction . ». Measure of Time. Time is the measure of duration. LESSON LXXXVI.(See Manual, Sec. I., Exercise V.) 60 seconds (sec.) make 1 minute, min. 60 minutes make 1 hour. h. 24 hours make 1 day. da. 7 days make 1 week. wk. 4 weeks and 2 days or ) make 0De & mQ_ 30 days j 365 days make a year. yr. 52 weeks make a year. yr. 12 calendar months make a year. yr. 95 LESSON LXXXVII. (See Manual, Sec. I., Exercise VI.)Circular Measure. Circular measure is used in measuring arcs ofcircles. TABLE. 60 seconds (j make
The first lessons in numbers : an illustrated table book, designed for elementary instruction . ». Measure of Time. Time is the measure of duration. LESSON LXXXVI.(See Manual, Sec. I., Exercise V.) 60 seconds (sec.) make 1 minute, min. 60 minutes make 1 hour. h. 24 hours make 1 day. da. 7 days make 1 week. wk. 4 weeks and 2 days or ) make 0De & mQ_ 30 days j 365 days make a year. yr. 52 weeks make a year. yr. 12 calendar months make a year. yr. 95 LESSON LXXXVII. (See Manual, Sec. I., Exercise VI.)Circular Measure. Circular measure is used in measuring arcs ofcircles. TABLE. 60 seconds (j make 1 minute. 60 minutes u 1 degree. 90 degrees 1 quadrant. qad. 4 quadrants 1 circumference, cir. Angular Measure. Angular measure is used for measuring differ-ence of directions. TABLE. 60 seconds () make 1 minute. 60 minutes 1 degree. ° 90 degrees 1 right angle, r. a.
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectarithmetic, bookyear1
