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because 180 degrees is a strait line, thefore unless the triangle does not have any strait lines the triangle has 3 180 degree angles in it.

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Q: Why is it possible for a triangle to contain a 180 degrees angle?
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What is the greatest number of right angels that a triangle can contain?

A triangle can only have a maximum of 1 right angle. The total degrees of all the angles of a triangle adds up to exactly 180. Since a triangle must have exactly three angles, it is not possible for the triangle to have more than one angle that is 90 degrees.


Can a triangle contain a right angle and an obtuse angle.?

No because the 3 interior angles of a triangle add up to 180 degrees


Can a triangle contain an obtuse angle and a right angle?

No because the 3 interior angles of a triangle add up to 180 degrees


Is it possible that a triangle can have all its angles as 90 degrees?

No because the 3 interior angles of a triangle must add up to 180 degrees and only a right angle triangle has 1 interior angle of 90 degrees.


What type of triangle has an angle that measures 20 degrees and and angle that measures 90 degrees?

Any triangle that has an angle measuring 90 degrees is a right triangle.


Why is it impossible for a triangle to contain an 180 degree angle?

The sum of the three included angles of a triangle always = 180 degrees. So if one angle = 180 degrees (a straight line) then the other two included angles will be = 0 degrees which cannot make a triangle.


Why is a right obtuse triangle not possible?

because if it is obtuse, there is no right angle. each corner has to be over 90 degrees (a right angle) to be an obtuse triangle.


How is it impossible for a triangle to contain a 180 degree angle?

Because the 3 interior angles of a triangle must add up to 180 degrees and not 1 angle on its own


What type of triangle has an angle that measures 20 degrees and an angle that measures ninety degrees?

It is a right angle triangle and its 3rd angle is 70 degrees.


What is the minimum interior angle possible for a regular polygon?

45 degrees, which would be the interior angle of a equilateral triangle


Why construction of a triangle with right angle and another obtuse angle is not possible?

Because the 3 interior angles of a triangle add up to 180 degrees no more and no less but a right angle plus an obtuse angle would be over 180 degrees.


What type of triangle has an angle measures 60 degrees and an angle that measures 90 degrees?

It is a right angle triangle and the 3rd angle will measure 30 degrees