Equilateral triangles have 3 sides of equal length, and 3 angles with measures of 60 degrees each.
rhombus
a parallelogram
Not necessarily. The definition for a rhombus is a polygon with four sides of equal length. Therefore, a square is a rhombus. However, any rhombus not as square does have two same sized acute and obtuse angles.
A parallelogram. A rhombus (a special case of parallelogram, with all 4 sides equal length) also fits this criteria.
triangle
A rhombus.
An equalateral triangle
A rhombus
An isosceles triangle fits the description given or an equilateral triangle which has 3 equal sides and 3 equal acute angles.
This is a SCALENE triangle. There several types of triangle; Equilateral ; The three sides are the same length and the three angles are ALL 60 degrees. All angles are ACUTE Isosceles ; Two sides are the same length , and two angles have the same degree value. . May be ACUTE or OBTUSE. Right angled ; The three sides may vary in length, but ONE angle is 90 degrees. Is ACUTE, and maybe ISOSCELES. Scalene ; All three sides are of different length, and all three angles have different degree value. May be ACUTE or OBTUSE. Fort ALL triangles , of whatever shape, the sum of the interior angles is ALWAYS 180 degrees.
An equilateral triangle.
Equilateral triangles have 3 sides of equal length, and 3 angles with measures of 60 degrees each.
An isosceles triangle is a shape that has at least 2 sides that are the same length. This forces the angles to be acute.
rhombus
Equilateral and acute
a parallelogram