## Stories about Mathematics-land, Volume 2J.M. Dent and Sons, 1927 - Mathematics |

### Common terms and phrases

180 degrees 2a²b³ 2ab+b² 90 degrees 9ab³ Adjacent Angles Algebra Angle contains angles are equal angles equal answer Arithmetic arranged Billy brackets centre Coefficients Construction contain 360 degrees course cube root describe a circle describe an arc describe an equilateral describe an Isosceles Divide divisions divisor Draw a line draw a straight draw regular figures Equilateral Triangle Euclid Extract the square Find the sum Find the value Geometry given straight line graph inches long Isosceles Triangle letters line at right Measure negative number of degrees parallel pence Problem Book Prop Proposition protractor prove Quadri Quadrilateral quotient radius Rhombus right angles rolling-pin Scalene set-square shillings sides and angles sides equal Simple Equations Simultaneous Equations Solve square root Subtraction Take any point thing Tommy Trapezium unknown terms Unlike Signs vertically opposite angles Waterloo station

### Popular passages

Page 73 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.

Page 73 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it.

Page 49 - To draw a straight line at right angles to a given straight line, from a given point in the same.

Page 72 - 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.

Page 73 - An ACUTE ANGLE is one which is less than a right angle ; as the angle DEF.

Page 69 - ECF; and they are adjacent angles. But, when the adjacent angles which one straight line makes with another straight line are equal to one another, each of them is called a right IT angle ; therefore each of the angles DCF, ECF, is a right angle.

Page 52 - To draw a straight line perpendicular to a given straight line of unlimited length from a given point without it.

Page 44 - Let BAC be the given rectilineal angle, it is required to bisect it. Take any point D in AB, and from AC cut (i.

Page 72 - DEF. 2. A line has position, and it has length, but neither breadth nor thickness. The extremities of a line are points, and the intersection of two lines is a point. DEF. 3. A surface has position, and it has length and breadth, but not thickness. The boundaries of a surface, and the intersection of two surfaces, are lines. DEF. 4. A solid has position, and it has length, breadth and thickness. The boundaries of a solid are surfaces. DEF. 5. A straight line is...

Page 74 - EFGH is a square. The area of a square is found by multiplying the length of one side by itself ; in other words, Area of a square = square of one side. Find the area, in square yards and smaller units, of a square, the length of whose side is : 49. 97 yds. 52. 372 ft. 55. 98 ft. 6 in. 50. 388...