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ABCD acute altitude base beginning bounded calculate called centimetres centre CHAPTER chord circle circumference common compasses cone Construct convenient corners corresponding cube cubic curved cylinder diagonals diagram diameter dimensions direction distance divided draw drawn edges ends equal equilateral triangle faces feet figure five fold four Geometry give given height hexagon horizontal inches kind lateral length mark means measure meet method metres middle points multiplied notice number of points object obtuse one-half opposite parallel parallelogram parallelopiped Pentagon perpendicular plane points of intersection polygon position possible prism problem proportion protractor pyramid question radii radius equal rectangle regular representing right angle rule ruler sector shape sides similar sphere square straight lines Suppose surface symmetrical tangent trapezoid triangle vertex vertices volume
Page 185 - The area of a parallelogram is equal to the product of its base and its height: A = bx h.
Page 221 - The areas of two similar triangles (or polygons) are to each other as the squares of any two corresponding sides.
Page 89 - CIRCLE is a plane figure bounded by a curved line, all the points of which are equally distant from a point within called the centre; as the figure ADB E.
Page 186 - The area of a triangle is equal to one-half the product of its base and altitude.
Page 115 - The area of the surface of a sphere is four times the area of a great circle.
Page 54 - The square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.
Page 166 - AB of the circle into as many equal parts as the polygon is to have sides. With the points A and B as centers and radius AB, describe arcs cutting each other at C.
Page 188 - Hence the area of a trapezoid is equal to its altitude, multiplied by the line which joins the middle points of the sides which are not parallel.