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2. Internal and external angles - Wikipedia

   en.wikipedia.org/wiki/Internal_and_external_angles

   The interior angle concept can be extended in a consistent way to crossed polygons such as star polygons by using the concept of directed angles.In general, the interior angle sum in degrees of any closed polygon, including crossed (self-intersecting) ones, is then given by 180(n–2k)°, where n is the number of vertices, and the strictly positive integer k is the number of total (360 ...

3. Corresponding sides and corresponding angles - Wikipedia

   en.wikipedia.org/wiki/Corresponding_sides_and...

   The corresponding angles as well as the corresponding sides are defined as appearing in the same sequence, so for example if in a polygon with the side sequence abcde and another with the corresponding side sequence vwxyz we have vertex angle a appearing between sides a and b then its corresponding vertex angle v must appear between sides v and w.

4. Angle - Wikipedia

   en.wikipedia.org/wiki/Angle

   An angle equal to ⁠ 1 / 4 ⁠ turn (90° or ⁠ π / 2 ⁠ radians) is called a right angle. Two lines that form a right angle are said to be normal, orthogonal, or perpendicular. [7] An angle larger than a right angle and smaller than a straight angle (between 90° and 180°) is called an obtuse angle [6] ("obtuse" meaning "blunt").

5. Mathematical table - Wikipedia

   en.wikipedia.org/wiki/Mathematical_table

   Facing pages from a 1619 book of mathematical tables by Matthias Bernegger, showing values for the sine, tangent and secant trigonometric functions. Angles less than 45° are found on the left page, angles greater than 45° on the right. Cosine, cotangent and cosecant are found by using the entry on the opposite page.

6. Beer and alcohol stocks face bigger challenges as US surgeon ...

   www.aol.com/finance/beer-alcohol-stocks-face...

   According to the advisory, nearly 100,000 US cancer cases and 20,000 cancer deaths have been linked to alcohol consumption each year. It noted seven types of cancer were linked, including breast ...

7. Brazilian police uncover military plot to kill Lula before ...

   www.aol.com/news/brazilian-police-arrest-five...

   BRASILIA (Reuters) -Brazilian police on Tuesday arrested five people, including a member of former President Jair Bolsonaro's cabinet, suspected of involvement in an alleged plan to kill then ...