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Triangle DEF is a right triangle with ∠E = 90°. What type of angles are ∠D and ∠F? |
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Answer» A clock is a device used to measure, keep, and indicate time. The clock is one of the oldest human INVENTIONS, meeting the need to measure INTERVALS of time shorter than the natural UNITS: the day, the lunar month, and the YEAR. ... Water clocks, along with the sundials, are possibly the oldest time-measuring instruments. MARK MY ANSWER AS BRAINLIEST AND FOLLOW ME THEN I WILL GIVE YOU 50 COINS. |
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