Answer:
1. Area: ½ x (product of the lengths of the diagonals)
Perimeter: 4 x side
Number of vertices: 4
Number of edges: 4
2. Area: ½ x (sum of the lengths of the parallel sides) x perpendicular distance between parallel sides
Perimeter: sum of lengths of sides of trapezoid
Number of vertices: 4
Number of edges: 4
3. Area: (side)²
Perimeter: 4 x side
Number of vertices: 4
Number of edges: 4
Internal angle: 90°
4. Area: lengthĂ—width
Perimeter: 2 x (length+width)
Number of vertices: 4
Number of edges: 4
Internal angle: 90°
5. Area: base Ă— height
Perimeter: 2 x (sum of lengths of adjacent sides)
Number of vertices: 4
Number of edges: 4
Properties: Convex polygon
Type: Quadrilateral
Rotational symmetry: Order 2
