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# 中点公式

left parenthesis, start color #1fab54, x, start subscript, 1, end subscript, end color #1fab54, comma, start color #e07d10, y, start subscript, 1, end subscript, end color #e07d10, right parenthesisleft parenthesis, start color #1fab54, x, start subscript, 2, end subscript, end color #1fab54, comma, start color #e07d10, y, start subscript, 2, end subscript, end color #e07d10, right parenthesisstart color #11accd, start text, 中, 点, end text, end color #11accd，通过已知公式 :
left parenthesis, start color #1fab54, start fraction, x, start subscript, 1, end subscript, plus, x, start subscript, 2, end subscript, divided by, 2, end fraction, end color #1fab54, comma, start color #e07d10, start fraction, y, start subscript, 1, end subscript, plus, y, start subscript, 2, end subscript, divided by, 2, end fraction, end color #e07d10, right parenthesis

## 推导中点公式

start color #11accd, start text, 中, 点, end text, end color #11accd 为每个点中间的点:
x-坐标的 start color #11accd, start text, 中, 点, end text, end color #11accd 表达式是 start color #1fab54, start fraction, x, start subscript, 1, end subscript, plus, x, start subscript, 2, end subscript, divided by, 2, end fraction, end color #1fab54:

left parenthesis, start color #1fab54, start fraction, x, start subscript, 1, end subscript, plus, x, start subscript, 2, end subscript, divided by, 2, end fraction, end color #1fab54, comma, start color #e07d10, start fraction, y, start subscript, 1, end subscript, plus, y, start subscript, 2, end subscript, divided by, 2, end fraction, end color #e07d10, right parenthesis

## 练习

start color #6495ed, A, end color #6495edstart color #6495ed, left parenthesis, minus, 6, comma, 8, right parenthesis, end color #6495ed 和点 start color #28ae7b, B, end color #28ae7bstart color #28ae7b, left parenthesis, 6, comma, minus, 7, right parenthesis, end color #28ae7b.

left parenthesis
,
right parenthesis