On a sphere you can draw a triangle with three right angles. . At the North pole , zero meridian and its right angle 90 oW merdian. Draw these meridians to the Equator, and you will find they both meet the Equator at 90 o (degrees).
triangle
triangle in 3dQuadrilaterals in general have four sides and four angles. Rhombuses, trapezoids, parallelograms, squares, rectangles, and other similar shapes are included among these.
The sum of internal angles of a shape is given by the equation 180(n-2) where n is the number of sides. For a pentagon, which has 5 sides, this would be 180x3 = 540. The sum of external angles of a shape is given by (180-(x/n))n where n is the number of sides and x is the sum of internal angles. For a pentagon, this would be 5x(180-540/5) = 360
right angled triangle
A rhombus has four equal sides but no right angles.
A shape with 4 right angles and 4 equal sides is a square. ==========================
what shape has 4 right angles and 2 pairs of equal sides?
A square has 4 equal sides with 4 right angles.
Rectangle
Trapezoid :)
octogon
A rectangle has two sets of two equal sides and four right angles.
A rhombus has 4 sides of equal length, opposing parallel sides, and no right angles
You don't tell us enough information. In a square, there are four sides and four angles. The sides are all equal and the angles are all right angles. In a rectangle, there are four sides and four angles The opposite sides are equal and the angles are all right angles. There is no other shape in which all angles are right angles.
A parallelogram.
Rhombus