It could be an isosceles right triangle, or it could be a non-regular specimen of
any polygon with more than three sides.
Rhombus :)
the answer is square's.
square
A four-sided shape with one right angle is a quadrilateral. There is no more specific term, unless it has more than one right angle or has equal sides.
A square is a two-dimensional shape with four equal sides and four right angles.
A rhombus, (or a square if there's a right angle).
a pentagon
A shape with three sides is called a triangle: 3 equal sides = equilateral 2 sides same length = isosceles 1 right angle = right-angled triangle
With right angles it is a square.Without right angles it is a rhombus.
triangle
Angles can be classified by size:Acute angle: between 0° and 90°Right angle: equal to 90°Obtuse angle: between 90° and 180°Straight angle (line): equal to 180°Reflex angle: between 180° and 360°In a shape, an angle can be an interior angle or an exterior angle.Angles that sum to 90° are called complementary angles.Angles that sum to 180° are called supplementary angles.
A right angled triangle.