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acute angle angle contained angle equal angled triangle angular points centre chord circle are equal circle described circumference cuts the circle Describe a square diameter draw a straight equal angles equal circles equal in area equilateral triangle exterior angle fixed circle given circle given point given rectilineal angle given straight line given triangle half the line hypothenuse Inscribe a circle isosceles triangle line be divided line be drawn line is equal LONDON SCHOOL BOARD Matriculation middle points obtuse angle opposite angles opposite sides parallel straight lines parallelogram are equal perpendicular point of contact points of section proposition prove Pupil Teachers quadrilateral figure rectangle contained rectilineal figure rhombus right angles right-angled triangle segment side subtending sides containing sides equal square on half squares described straight line intercepted straight lines cut student tangents theorem third angle third side touch a circle triangle the square twice the rectangle vertex whole line
Seite 160 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.
Seite 184 - If a straight line touch a circle, and from the point of contact a chord be drawn, the angles which this chord makes with the tangent are equal to the angles in the alternate segments.
Seite 156 - A tangent to a circle is perpendicular to the radius drawn to the point of contact.
Seite 182 - IF a side of any triangle be produced, the exterior angle is equal to the two interior and opposite angles ; and the three interior angles of every triangle are equal to two right angles.
Seite 153 - Any two sides of a triangle are together greater than the third side.
Seite 167 - THE angles at the base of an isosceles triangle are equal to one another : and, if the equal sides be produced, the angles upon the other side of the base shall be equal.
Seite 164 - AB be the given straight line ; it is required to divide it into two parts, so that the rectangle contained by the whole, and one of the parts, shall be equal to the square of the other part.
Seite 130 - To describe an isosceles triangle, having each of the angles at the base double of the third angle.