## A course of practical geometry for mechanics |

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13 inches altitude apply base Bisect Book called centre chords circumference construction contain cutting describe a circle describe a regular describe an arc diagonal scale diameter difference distance Divide divisions dotted Draw a line Draw the line equal Euclid EXAMPLES exercise extremities figure Find formed four French Geometry given angle given circle given line given point given straight line given triangle greater half hexagon inches long inscribe intersection isosceles triangle Join length Let A B mean measure meet Multiplication Note opposite parallel parallelogram pentagon perpendicular plain scale plane practice Price Prob PROBLEM produced Prop proportional pupil radii radius ratio REASON rectangle regular polygon right angles right line right-angled triangle School segment sides similar square straight line student tangent triangle equal triangle required vertex vertical angle

### Popular passages

Page 8 - 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 8 - 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 7 - 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 68 - In any right-angled triangle, the square which is described upon the side subtending the right angle, is equal to the squares described upon the sides which contain the right angle.

Page 14 - An angle in a segment is the angle contained by two straight lines drawn from any point in the circumference of the segment to the extremities of the straight . line which is the base of the segment.

Page 9 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.

Page 11 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.

Page 7 - ... straight lines, and the other upon the other line : Thus the angle which is contained by the straight lines, AB, CB, is named the angle ABC, or CBA ; that which is contained by AB...