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Yes. Every triangle with an obtuse angle must have two acute angles.
Impossible
A triangle can only have 1 right angle or 1 obtuse angle in it because its 3 interior angles add up to 180 degrees
The letter V is an acute angle. Draw it large and label the point with a 'b' and the tips of the arms 'a' and 'c'. Any angle smaller than 90 degrees is acute. The letter L has a 90 degree (right) angle. The letter M has 3 acute angles. Angles greater than 90 degrees are obtuse. The letter X is usually written with two acute angles and two obtuse angles.
Yes providing that the other 2 angles are acute