horizontal rough textured dark green blackboard vector background with a figure representing pythagoras theorem, a right angled triangle formed with the joined vertices of three geometric shapes- a square plus b square equals c squares - 三角 幅插畫檔、美工圖案、卡通及圖標三角形, 黑板
senior teacher using a big screen to give lessons on math trigonometry to adult student - 三角 個照片及圖片檔教師, 白人, 幾何圖形
right angled triangle abc drawn on vector gray white graph paper, 90 degrees angle at b, drawn in black ink - 三角 幅插畫檔、美工圖案、卡通及圖標
geometric illustration showing abstract designs and mathematical patterns - 三角 幅插畫檔、美工圖案、卡通及圖標黃金比例, 概念, 圓形
vector illustration of textured blackboard with hand written scientific formulas and calculations in physics and mathematics covering variety of complex topics, mathematical calculations, formulas, derivations and identities with copy space - 三角 幅插畫檔、美工圖案、卡通及圖標數學, 數學符號, 黑板
horizontal rough textured dark black blackboard vector background with figure of pythagoras theorem, right angled triangle geometric shape, abc with 90 degree angle at b and encircled white text equation formula - ab square plus bc square equals ac square - 三角 幅插畫檔、美工圖案、卡通及圖標黑板, 式樣, 教育
horizontal rough textured fawn beige light brown coloured faded scratched wall sheet vector background with a figure representing pythagoras theorem, a right angled triangle formed with the joined vertices of three squares - 三角 幅插畫檔、美工圖案、卡通及圖標正方形, 三角形
physics students' notes is spread out across a desk or workspace. the notes are handwritten in a mixture of neatly organized equations, diagrams, and detailed explanations, with some sketches of physics concepts like forces, motion, and waves. - 三角 個照片及圖片檔數學符號, 數學, 考試
abstract green polygonal triangle background. modern geometric background. summer green gradient poster - 三角 幅插畫檔、美工圖案、卡通及圖標綠色, 抽象, 背景 - 主題
glossy geometric sphere in purple gradient, 3d polygonal abstract object, vector illustration - 三角 幅插畫檔、美工圖案、卡通及圖標低面數建模, 複雜性, 線框
Index Chart to the Great Trigonometrical Survey of India, The 1870 Index Chart to the Great Trigonometrical Survey of India showing Col Lambtons...印度
In 1799 Colonel William Lambton proposed a plan for a mathematical and geographical survey. The main aims of what later became the Great...印度
Hand-coloured woodcut from the appendix of the �Margarita Philosophica� by Gregorius Reisch . First printed in 1503, this encyclopaedia of knowledge...
horizontal rough textured fawn beige light brown coloured faded scratched wall sheet vector background with a figure representing, a right angled triangle formed with the joined vertices of three squares with abstract scribbled shading - 三角 幅插畫檔、美工圖案、卡通及圖標髒亂感影像技術
senior teacher using a large tv screen to explain trigonometry to adult students in classroom - 三角 個照片及圖片檔課室, 技術, 學習
cheerful indian girl student erasing mathematics problems from greenboard blackboard - 三角 個照片及圖片檔數學符號, 印度, 教育
SciMatics Academy head Daniel Barbour helps Suzannah Wood with a trigonometry problem in his office at Rio Rancho High School in Rio Rancho, New...
Calculating machine invented by Sir Samuel Morland , adapted to trigonometrical computation. Morland was the first Englishman to venture into the...
William Oughtred was born in Eton, Buckinghamshire and attended Eton school before going on to Cambridge University in 1592. He was ordained as an...
Engraving showing the use of an astrolabe in trigonometry to calculate height and width. Illustration from �Mathematischer Atlas� by Tobias Mayer...
Engraving. The Principal Triangulation of Britain was carried out by General William Roy of the Royal Engineers between 1787 and 1789, using...十八世紀, 18世紀風格
Engraving showing details of an instrument used for surveying: the top of the vertical axis, with part of the horizontal bar for carrying the upper...
Engraving showing plans of buildings where a portable transit instrument was placed for triangulation. These include: Greenwich Royal Observatory,...
Engraving showing a plan of the triangles connecting the meridians of the Royal Observatories of Greenwich and Paris. Other locations used for the...
Engraving. The Principal Triangulation of Britain was carried out by General William Roy of the Royal Engineers between 1787 and 1789, using...十八世紀, 18世紀風格, 設計圖
Engraving showing: plan of the instrument; section of the Instrument at right angles to the former, where the upper telescope, with the level for...十八世紀, 18世紀風格
On the obverse is the clinometer: this consists of two pinhole sights to be used with a quadrant scale which runs along the base and up the...
On the obverse is the clinometer: this consists of two pinhole sights to be used with a quadrant scale which runs along the base and up the...
Set of mathematical models in mahogany box, early to mid 18th century. The models were said to illustrate John Keill's course of trigonometry but do...
Bissaker's slide rule is the earliest dated straight slide rule. The scales are mainly trigonometrical and logarithmic. The instrument is inscribed...
Photogravure from a photograph by Maull & Polyblank. Between 1818 and 1843 Everest conducted the survey of India. He was appointed Superintendent of...印度
Engraving of William Oughtred who wrote extensively on mathematics. In 'Clavis Mathematica' , a textbook on arithmetic and algebra, Oughtred...
