A School Geometry, Μέρη 1-4Macmillan and Company, 1908 |
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Σελίδα xii
... SCALES Practical Geometry . Problems . PROBLEMS ON LINES AND ANGLES . 69 69 68886 63 INTRODUCTION . NECESSARY INSTRUMENTS PROBLEM 1. To bisect a given angle . PROBLEM 2. To bisect a given straight line . 71 PROBLEM 3. To draw a straight ...
... SCALES Practical Geometry . Problems . PROBLEMS ON LINES AND ANGLES . 69 69 68886 63 INTRODUCTION . NECESSARY INSTRUMENTS PROBLEM 1. To bisect a given angle . PROBLEM 2. To bisect a given straight line . 71 PROBLEM 3. To draw a straight ...
Σελίδα 27
... ( scale 1 cm . to 10 metres ) , and find by measurement as nearly as you can how far I am from my starting point . 7. When the sun is 42 ° above the horizon , a vertical pole casts a shadow 30 ft . long . Represent this on a diagram ( scale ...
... ( scale 1 cm . to 10 metres ) , and find by measurement as nearly as you can how far I am from my starting point . 7. When the sun is 42 ° above the horizon , a vertical pole casts a shadow 30 ft . long . Represent this on a diagram ( scale ...
Σελίδα 55
... ( scale 1 cm . to 10 ft . ) , and find by measurement the approximate height of the flagstaff . 13. From P , the top of a lighthouse PQ , two boats A and B are seen at anchor in a line due south of the lighthouse . It is known that PQ ...
... ( scale 1 cm . to 10 ft . ) , and find by measurement the approximate height of the flagstaff . 13. From P , the top of a lighthouse PQ , two boats A and B are seen at anchor in a line due south of the lighthouse . It is known that PQ ...
Σελίδα 65
... side , and is therefore constant . 16. Equal and parallel lines have equal projections on any other straight line . H.S.G. DIAGONAL SCALES . Diagonal scales form an important application of PARALLELS AND PARALLELOGRAMS . 65.
... side , and is therefore constant . 16. Equal and parallel lines have equal projections on any other straight line . H.S.G. DIAGONAL SCALES . Diagonal scales form an important application of PARALLELS AND PARALLELOGRAMS . 65.
Σελίδα 66
Henry Sinclair Hall. DIAGONAL SCALES . Diagonal scales form an important application of Theorem 22 We shall illustrate their construction and use by describing a Decimal Diagonal Scale to shew Inches , Tenths , and Hundredths . A ...
Henry Sinclair Hall. DIAGONAL SCALES . Diagonal scales form an important application of Theorem 22 We shall illustrate their construction and use by describing a Decimal Diagonal Scale to shew Inches , Tenths , and Hundredths . A ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
AB² adjacent angles altitude angle equal base BC bisector bisects circle of radius circle whose centre circles which touch circum-circle circumference circumscribed coincide common tangents concyclic Construct a triangle diagonals diagram diameter distance divided draw a circle equal in area equidistant escribed circles Euclid exterior angles Find the area find the locus given angle given circle given point given straight line given triangle greater Hence hypotenuse inches inscribed isosceles triangle length Let ABC meet metres middle point millimetre nine-points circle opposite sides orthocentre par¹ parallelogram pedal triangle perp PROBLEM produced Proof radii rect rectangle rectangle contained rectilineal figure required to prove respectively rhombus right angles right-angled triangle segment shew shewn straight line drawn tangent Theor Theorem trapezium triangle ABC triangles are equal vertex vertical angle
Δημοφιλή αποσπάσματα
Σελίδα xi - IF two triangles have two angles of one equal to two angles of the other, each to each ; and one side equal to one side, viz. either the sides adjacent to the equal...
Σελίδα 44 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Σελίδα 190 - Upon a given straight line to describe a segment of a circle, which shall contain an angle equal to a given rectilineal angle.
Σελίδα 12 - If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line.
Σελίδα 5 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Σελίδα 122 - The square described on the hypothenuse of a rightangled triangle is equal to the sum of the squares described on the other two sides.
Σελίδα 28 - If one side of a triangle be produced, the exterior angle is greater than either of the interior opposite angles.
Σελίδα x - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Σελίδα 65 - The sum of the perpendiculars from any point within an equilateral triangle to the three sides is equal to the altitude of the triangle (Fig.