The rectangle.
They are all polygons.
An isosceles triangle has exactly one line of symmetry, a rectangle has two. A trapezoid can have none or one.
You get the shape of an envelope with its flap open.
right triangle
Triangle: Half the product of the longest side and the perpendicular distance from it to the apex. Trapezoid: Half the product of the sum of its bases and the height.
The formula for the area of a trapezoid is a combination of the formulas for the areas of a triangle and a rectangle. It can be seen as two congruent triangles placed together to form a parallelogram. So, the formula for the area of a parallelogram is a generalization of the formula for the area of a trapezoid.
It is the triangle which has only 3 sides whereas the rest have 4 sides.
d. rectangle
circle triangle square rectangle trapezoid
yes and triangle trapezoid and rectangle
Line, Circle, Triangle, Square, Rectangle, Trapezoid, Pyramid, Polyhedron.
Rectangle Area of parallelogram = Base * Height Area of rectangle = Base * Height