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altitude applied base Bisect called centre chords circumference contain curved cutting definitions describe a circle describe a regular describe an arc diagonals diagrams diameter distance divide division dotted Draw a line Draw the line drawn Edition ENGLISH Euclid EXAMPLE extremities figure four geometry given angle given line given point given triangle greater hexagon Horizontal inches long inscribe isosceles triangle Join legs length Let A B letters mean measure mechanic meet method MULTIPLICATION names nearly necessary obtained opposite parallel parallelogram pencil pentagon perpendicular plane polygon practical Prob PROBLEM Produce proportional quantity radius ratio reason rectangle rectilineal right angles right line right-angled triangle Royal scale sector segment sides similar square equal straight line student superficies tangent Transformation triangle equal triangle required true vertex vertical vide Prob
Página 8 - 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.
Página 9 - CHG; and they are adjacent angles; but when a straight line standing on another straight line makes the adjacent angles equal to one another...
Página 9 - 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.
Página 13 - Of four-sided figures, a SQUARE is that which has all its sides equal, and all its angles right angles.
Página 9 - 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.
Página 14 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Página 8 - A plane angle is the inclination of two lines to one another* in a plane, which meet together, but are not in the same direction.
Página 13 - A rhomboid, is that which has its opposite sides equal to one another, but all its sides are not equal, nor its angles right angles.