Question

1. a parallelogram with four right angles is... /// un paralelogramo con cuatro ángulos rectos es...

Explanation:

Step1: Recall parallelogram and rectangle definitions

A parallelogram has opposite sides parallel and equal. A rectangle is defined as a parallelogram with four right angles (90° each). Also, squares (special rectangles) and rectangles both fit, but the general term for a parallelogram with four right angles is a rectangle (or square, but rectangle is the broader category here).

Step2: Confirm the geometric definition

By the definition of a rectangle: a quadrilateral (specifically a parallelogram here) with four right angles. So a parallelogram with four right angles must be a rectangle (or square, but rectangle is the standard answer for this definition).

Answer:

A parallelogram with four right angles is a rectangle (or a square, as a square is a special type of rectangle).