All triangles have at least two acute angles. Acute triangles have three. Rhomboids also have two acute angles.
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some triangles and rhombuses. trapoziods do not have acute angles it has obtuse angles. :)
A triangle is the only shape that can have only acute angles inside it.
Acute angles
None. Though there can be ten if the hexagons are concave hexagons.
With 2 acute and 2 obtuse angles it has 4 angles - the shape is a quadrilateral. The shape can be one of trapezium, parallelogram, rhombus, kite or a general quadrilateral. With the two acute angles next to each other (forcing the two obtuse angles to be next to each other) the shape can be either a trapezium or a general quadrilateral.