I am erecting a sail which is an equilateral triangle with each side being 5 metres long. I intend to sink two holes against a straight wall five metres apart (actually a bit more for allowing for fittings) and I want to know how far out to dig the third hole.
Same question but an addition to this project. I also purchased a seconb sail which I want to butt up against the first one (5 metre side touching the other 5 metre side) the finished result would be a rhombus(?) of two triangles. One pointing outward and the other pointing inwards but touching the other. I am completely bamboozled. Thanks Pauline
2007-01-19 14:54:15 · 2 answers · asked by Pauline H 1 in Science & Mathematics ➔ Mathematics
OK, to the first question . . . I gather that you need to know the height of a 5 m equilateral triangle. The distance from the center of one side to the opposite corner is 2.5 * sqrt(3), or 4.33 m. Just be SURE that you measure perpendicular (at a right angle to) to the imaginary line between the two holes you drill. Also, start 2.5 m from one of the first holes you put in. I'm not exactly sure what you're doing, but it sounds like that's what you need to know.
The second question . . . yes, the two triangles would form a rhombus. If you need more help and no one gives it to you, email me. Good night!
2007-01-19 15:12:19 · answer #1 · answered by anonymous 7 · 0⤊ 0⤋
1. B. Any triangle with a 90 degree angle is a right triangle regardless of the dimensions of the other two angles. 2. D. A triangle with all three sides the same length would also have all three angles the same (60 degrees). 3. B. Triangles A & D are covered by questions 2 & 1, respectively. An isosceles triangles has two equal sides.
2016-05-23 23:28:39 · answer #2 · answered by ? 4 · 0⤊ 0⤋