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Yes.
The sum of the angles in a triangle is 180°
All angles in a triangle must be greater than 0° which means that the sum of any two angles must be less than 180°
If two angles are right angles (90°), their sum is 180° which is not less than 180°; thus at most one angle can be a right angle.
If one angle is a right angle and another is an obtuse angle (greater than 90°), then their sum is greater than 180°, which is not less than 180°; thus there can be at most one of a right angle and an obtuse angle.
If two angles are obtuse angles, their sum is greater than 180°, which is not less than 180°; thus there can be at most one obtuse angle.
If there is at most one right angle or an obtuse angle, there must be at least two acute angles.
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Do all triangles have an acute angle?
All triangles have at least 2 acute angles. All 3 angles of a triangle will equal 180 degrees.
What is a triangle with at least 2 acute angles?
All triangles have at least two acute angles so the question does not add any further value.
Do scalene triangles have acute angles?
Yes. Any triangle (in the standard Euclidian geometry) has at least 2 angles; some have 3.
A triangle with 2 acute angles?
All right angle triangles have 2 acute angles and one 90 degree angle.
What flag has 4 right triangles 2 equilateral triangles and 2 acute angles?
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