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### 13 Cards in this Set

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• Back
 if 2 points are polar infinite great circles connect if 2 points are non-polar only one great circle connects minor arch is distance less than a semi-cirle major arch is distance more than a semi-circle [no answer] all great circles intersect [no question] arch addition postulate=segment addition postulate lines can be parallel there are no parallel great circles 2 perpendicular lines form 4 right angles 2 perpendicular great circles form 8 right angles triangle angles measures always equal 180 triangle angle measures are always over 180 how are circles created? they are created through intersecting planes? how are parallel small circles determined? they are determined through parallel planes [no answer] A great circle is finite. [no question] Given a circle l and a point p, there exists only one perpendicular circle to l passing through p. [no answer] 2 intersecting circles divide the sphere into 4 regions. [no question] 2 distince great circles intersect in exactly 2 points. [no answer] A pair of perpendicular great circles divide the sphere into 4 finite congruent regions. [no question] A pair of interesting great circles intersect twice and create 8 right angles.