They are all polygons.
Bigger triangle, a parallelogram or a pentagon.
-- trapezoid -- triangle -- irregular quadrilateral -- pentagon -- hexagon etc.
A scalene triangle, A trapezoid, an irregular pentagon.
A big triangle if you put the triangle on the trapezoid's short parallel side, or a parallelogram if you put it on one of the trapezoid's ends. In both cases the triangle must be exactly the right shape and size or you will only have an irregular quadrilateral, pentagon, or hexagon. (Placing an appropriately-sized triangle on the long parallel side will also yield a pentagon - likely irregular.) Additionally, if a vertex of the triangle touches the trapezoid it can also make an irregular concave heptagon!
The generalization of a triangle, trapezoid, and pentagon can be understood through the concept of polygons. A triangle is a three-sided polygon, a trapezoid is a four-sided polygon (quadrilateral) with at least one pair of parallel sides, and a pentagon is a five-sided polygon. More broadly, these shapes are all specific instances of n-gons, where "n" represents the number of sides and vertices in the polygon, allowing for a classification based on the number of sides and the relationships between them.
triangle
How you like them depends on you and unfortunately, we at Answers.com, cannot read minds.
Bigger triangle, a parallelogram or a pentagon.
The all have 2 or more sides
-- trapezoid -- triangle -- irregular quadrilateral -- pentagon -- hexagon etc.
A scalene triangle, A trapezoid, an irregular pentagon.
Depending on how you combine them.You could have a trapezoid or a pentagon.
The all have 2 or more sides
A big triangle if you put the triangle on the trapezoid's short parallel side, or a parallelogram if you put it on one of the trapezoid's ends. In both cases the triangle must be exactly the right shape and size or you will only have an irregular quadrilateral, pentagon, or hexagon. (Placing an appropriately-sized triangle on the long parallel side will also yield a pentagon - likely irregular.) Additionally, if a vertex of the triangle touches the trapezoid it can also make an irregular concave heptagon!
A pentagon has 5 sides and a trapezoid ha 4 sides
triangle circle square octagon pentagon hexagon trapezoid
They all have exterior angles that add up to 360 degrees.