A right angle triangle or an obtuse triangle
A triangle.
Yes. An acute triangle has three acute angles so that would make it a regular polygon with congruent sides.
A right triangle.
there are three acute angles in an acute triangle, because there are three corners.
Any irregular polygon can have an acute angle. A regular triangle (equilateral) has three acute angles. All other triangles must have at least two acute angles. A quadrilateral, other than a rectangle (or square), must have at least one.
Acute scalene triangle
there are three acute angles in an acute triangle, because there are three corners.
Yes... an acute triangle does have three angles to it.
A triangle with 3 acute angles is an acute triangle. All the angles in an acute triangle are acute.
In an acute triangle, all three angles are acute.
It impossible for a triangle to have three acute angles. * * * * * What? A triangle most certainly can have three acute angles. Such a triangle would be called an acute-angled triangle!
An equilateral triangle should do it. This is a triangle with all three sides of equal length, and each angle being 60 degrees.