isosceles triangle - Jefferson School District
... This is an isosceles obtuse triangle. B. isosceles right ...
... This is an isosceles obtuse triangle. B. isosceles right ...
Skills: To construct circles of a given radius, angle bisectors, and
... Given any triangle use construction to find the centre of gravity of the triangle. 1) Rule a neat large triangle. 2) Perpendicular bisect all three sides. Don’t rule in the perpendicular bisector, just mark the midpoint of the side. 3) Rule a line from a corner of the triangle to the middle of the o ...
... Given any triangle use construction to find the centre of gravity of the triangle. 1) Rule a neat large triangle. 2) Perpendicular bisect all three sides. Don’t rule in the perpendicular bisector, just mark the midpoint of the side. 3) Rule a line from a corner of the triangle to the middle of the o ...
Rule of marteloio
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The rule of marteloio is a medieval technique of navigational computation that uses compass direction, distance and a simple trigonometric table known as the toleta de marteloio. The rule told mariners how to plot the traverse between two different navigation courses by means of resolving triangles with the help of the Toleta and basic arithmetic.Those uncomfortable with manipulating numbers could resort to the visual tondo e quadro (circle-and-square) and achieve their answer with dividers. The rule of marteloio was commonly used by Mediterranean navigators during the 14th and 15th centuries, before the development of astronomical navigation.