11 геометрични задачи

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    27-Jun-2015

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<ul><li> 1. </li></ul> <p> 2. ? </p> <ul><li>: </li></ul> <ul><li>, , </li></ul> <p> 3. ) ) , . = 90 = 120 = 60 4. ) . = 30 30 = 60 60 = 52 52 = 30 + 60 + 52 = 142 5. ) ? . ) = 25 = 45 = 2 . 25 + 2. 45 =140 ) DM = 20 D=20 S= 2 0. 2 0= 400 . 6. ) 735. .) 93 , 87 . . 735 : 3 = 265 2. 87 + 93 = 267 7. . . 10 15 20 = 10 = 15 = 20 P= 10 + 15 + 20 = 55 8. </p>