What are at least facts and features of a trapezoid?

Answer 1

1 It's a 2 dimensional shape with 4 sides

2 It's in the class of polgons known as quadrilaterals

3 It's called a polygon because it has many sides and angles

4 It's described as a trapezoid in the United States

5 It's referred to as a trapezium in the United Kingdom

6 It has 4 interior angles that add up to 360 degrees

7 It has 4 exterior angles that add up to 360 degrees

8 It normally has 2 diagonals of different lengths

9 It can have 2 equal diagonals if it's an isosceles trapezoid

10 It normally has no lines of symmetry

11 It can have 1 line of symmetry if it's an isosceles trapezoid

12 It can tessellate

13 It has 1 pair of parallel sides of different lengths

14 It has congruent slanted sides if it's an isosceles trapezoid

15 It has equal base angles when in the form of an isosceles trapezoid

16 It can have 2 right angles an acute angle and an obtuse angle

17 It has an area which is 0.5 times sum of parallel sides times height

18 It has a perimeter which is the sum of its sides

19 It's the result of 2 triangles joined together

20 It's depicted on a one dollar bill

21 Its features have been known since the times of the Pharaohs in ancient Egypt