Plz help fast 1. Why are all rectangles parallelograms, but all parallelograms are not rectangles?

2. What properties must a quadrilateral posses in order for the quadrilateral to be classified as a:

a) trapezoid

b) isosceles trapezoid?

1: Because all lines on a rectangle never touch so it is a parallelogram. But all sides of a square don't touch either, so that's also a parallelogram. So not all parallelograms are rectangles since squares are also parallelograms

Step-by-step explanation:

Step-by-step explanation:

1. All internal angles of a rectangle are 90° while the internal angles of a parallelogram may differ

2. A quadrilateral just means anything with 4 sides (quad meaning 4 and lateral meaning sides) and it is 2-dimensional with straight sides.

Therefore, the trapezoid and isosceles trapezoid are quadrilateral

a) A quadrilateral must have a pair of parallel sides to be classified as a trapezoid.

b) A quadrilateral must have the left and right side to be of equal length and the base angles equal to be classified as an isosceles trapezoid

I hope this answers your questions correctly

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