First book of mathematicsA. & C. Black, 1872 - 124 sider |
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Resultat 1-5 av 7
Side 10
... angle , as E , fig . 4 , p . 6 , if it is a right angle , this will be best seen by producing ( lengthening out ) ... ACUTE ANGLE is less than a right angle . 52. AN OBTUSE ANGLE is greater than a right angle . In fig . 4 , p . 6 , the ...
... angle , as E , fig . 4 , p . 6 , if it is a right angle , this will be best seen by producing ( lengthening out ) ... ACUTE ANGLE is less than a right angle . 52. AN OBTUSE ANGLE is greater than a right angle . In fig . 4 , p . 6 , the ...
Side 28
... ACUTE ANGLED TRIANGLE has all its angles acute . 99. AN OBTUSE ANGLED TRIANGLE has one obtuse angle . A triangle can only have one obtuse angle . Fig . 23 is an acute angled triangle . Both triangles , ABC , in fig . 24 , are obtuse ...
... ACUTE ANGLED TRIANGLE has all its angles acute . 99. AN OBTUSE ANGLED TRIANGLE has one obtuse angle . A triangle can only have one obtuse angle . Fig . 23 is an acute angled triangle . Both triangles , ABC , in fig . 24 , are obtuse ...
Side 35
... angles equal , each to each , to like parts in the given triangle ; for— Two triangles are equal in all respects ... angle are given . ( 1. ) When the given side is between the two given angles ( right and acute ) ; as , AC , and the ...
... angles equal , each to each , to like parts in the given triangle ; for— Two triangles are equal in all respects ... angle are given . ( 1. ) When the given side is between the two given angles ( right and acute ) ; as , AC , and the ...
Side 36
... acute angle ; as , AC and the angle required at B. At A and C draw AD and CB perpendicular to AC . At A in the line AD , make the angle DAB equal to the given acute angle , producing AB till it meets the perpendicular at C in B. The ...
... acute angle ; as , AC and the angle required at B. At A and C draw AD and CB perpendicular to AC . At A in the line AD , make the angle DAB equal to the given acute angle , producing AB till it meets the perpendicular at C in B. The ...
Side 37
Hugo Reid. RECTANGLE , & c . 37 angles , the two acute angles must be together equal to one right angle ; and one of them is equal to the differ- ence between the other and one right angle . Note 2. - In every right - angled triangle ...
Hugo Reid. RECTANGLE , & c . 37 angles , the two acute angles must be together equal to one right angle ; and one of them is equal to the differ- ence between the other and one right angle . Note 2. - In every right - angled triangle ...
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Vanlige uttrykk og setninger
20 feet ABCD acute angle adjacent angles adjacent sides algebra altitude angle equal angular points Ans.-1 acre arc cutting called central angle centre circumference contained denotes describe an arc diagonal divide divisor drawn equal angles equal sides equation equidistant equilateral triangle expressed extract the square ference Find the area Find the length foot formula geometrical truth given angle given line given point given square given straight line given triangle gonal hexagon hypotenuse inches inscribed line joining meet middle point multiply Nonagon Note number of degrees number of sides opposite angles opposite side parallel lines parallelogram pendicular perpendicular plane figure point of bisection poles produced proportion quadrilateral radius equal ratio rectangle rectilineal figure regular polygon rhombus right angles right-angled triangle rood rule sides equal square equal square feet square root square yards subtracted surface tangent trapezium trapezoid unknown quantity
Populære avsnitt
Side 5 - The circumference of every circle is supposed to be divided into...
Side 48 - UPON a given straight line to describe a segment of a circle containing an angle equal to a given rectilineal angle.
Side 3 - A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
Side 39 - Parallelograms on the same base, and between the same parallels, are equal to one another.
Side 59 - Quadrilateral ; of five sides a Pentagon ; of six sides a Hexagon ; of seven sides a Heptagon ; of eight sides an Octagon ; of nine sides a Nonagon ; of ten sides a Decagon ; of twelve sides a Dodecagon.
Side 112 - Polygons are those which have more than four sides. They receive particular names from the number of their sides ; thus a pentagon has five sides, a hexagon has six sides, a heptagon seven, an octagon eight, a nonagon nine, a decagon ten, an undecagon eleven, and a dodecagon has twelve sides.
Side 118 - Divide the area by . 7854 and extract the square root of the quotient.
Side 82 - To rearrange an equation you can • add the same quantity to both sides • subtract the same quantity from both sides • multiply both sides by the same quantity • divide both sides by the same quantity.
Side 107 - Find the area of a field in the form of a trapezoid whose altitude is 120 m and whose parallel sides are 130 m and 180 m.
Side 4 - It is a line every point of which is at the same distance from a point within it called the centre.