who invent the first calendar?

what does it mean???

The inventor was Alosyius Lilius. He invented the first calendar around 8,000 BC.

finally got answer!

thx @Hi!

Np :)

yeah thanks!

umm no...

In a right angled triangle, the ______ is the largest angle.

=Acute angle
=Right angle
=Obtuse angle
=Straight angle
which one is correct?

the right angle

I think its straight angle because obtuse is greater than 90 but less then 180 but straight angle is 180 so straight is correct

Thank you :)

in my book its right angle

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