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北师大版七年级下册数学期中：直角与平角，角平分线，角的关系
七年级期中压轴大题，考点：直角，角平分线，平角,角的等量关系
七年级下册数学：压轴题7/15
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七年级期中压轴大题，考点：直角，角平分线，平角,角的等量关系
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