Crossword-Solution: SUBTEND 7 letters, 3 clues 🏆 scrabble score: 10

The elder Herschel's early studies of double stars were undertaken in the hope that these objects might aid him in ascertaining the actual distance of a star, through measurement of its annual parallax--that is to say, of the angle which the diameter of the earth's orbit would subtend as seen from the star.

The lesser Congo delta is bounded north by the Banana or Malela stream, whose lower fork is "Pirates' Creek;" and south by the mangrove-clad drains, which subtend the main line: the base measures 12-15 miles.

How do we discover that, in an isosceles triangle, the sides which subtend the equal angles are equal? We do not go about collecting the opinions of individuals upon the subject, nor do we consult the records of other peoples, past or present.

The same infallible guide cuts off mountain-tops and deeply snowed ridges, which to the unaided eye appear far lower than the point from which they are viewed; but which, from the quantity of snow on them, must be many thousand feet higher, and, from the angle they subtend in the instrument, must be at an immense distance.

These are distant (reckoning from west to east) respectively 164, 170, and 172 miles from Myrung, and subtend angles of + 0 degrees 4 minutes 0 seconds, - 0 degrees 1 minute 30 seconds, and -0 degrees 2 minutes 28 seconds.* [These angles were taken both at sunrise and sunset, and with an excellent theodolite, and were repeated after two considerable intervals.