Question

Triangle DEF is a right triangle with ∠E = 90°. What type of angles are ∠D and ∠F?

Answer 1

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.

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Answer 2

Answer:

Acute

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