## A treatis on spherics, Page 212 |

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applied arch base bisect called chords circumference common section complement consequently construction contained conversely cosine describe describe a circle diameter draw drawn equal equal circles equations evident express extremity figure fore Forms four functions given angle given arch given circle given point given sphere greater half Hence hypotenuse hypothesis Introd isosceles join known less lesser circle manifest manner means measure meet method parallel pass perpendicular plane polar distance polar triangle pole Problem produced PROP proposed proposition proved quadrant radius remaining respectively right angles segments semi-circumference shewn sine solution solved species sphere sphere's center sphere's surface spherical angle spherical triangle straight line supposed Tables tangent Theorem third three angles three sides touch wherefore