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矗基础篇矗课时一圆的有关性质 诊断练习 一、填空题 1.已知00半径为scm,若O尸~4cm,口Q-scm,OR~6cm,则尸、Q、R与00的关系是:尸在00 ,Q在00,R在00 2.00的半径为6 cm,OP一3.6 cm,则经过点P最短的弦比最长的弦短 3.E为△ABC外接圆BC的中点且E到BC的距离为3cm,BE=scm,则△ABC外接
矗Fundamentals of the basics Particulars of a round of relevant diagnostic exercises 1. Fill in the blank 1. Known 00 radius is scm, if O corpse~4cm, mouth Q-scm, OR~6cm, then the relationship between corpse, Q, R and 00 Yes: The corpse is at 00, Q is at 00, R is 6 cm at 00 2.00, OP is 3.6 cm, then the shortest chord after the point P is shorter than the longest chord 3. E is the midpoint of the circumscribed BC of ABC The E to BC distance is 3cm, BE=scm, then △ABC external