# What is a rectangle not a square?

## What is a rectangle not a square?

A quadrilateral is a rectangle if all four internal angles are 90∘ . The above is a rectangle, as all four angles are 90∘ , but is not a square, as the two vertical sides are shorter than the two horizontal sides.

## Can we say every rectangle is a square?

Definition: A rectangle is a quadrilateral with all four angles right angles. Thus every square is a rectangle because it is a quadrilateral with all four angles right angles. However not every rectangle is a square, to be a square its sides must have the same length.

Can we call a square is a rectangle?

Yes, a square is a special type of rectangle because it possesses all the properties of a rectangle. Similar to a rectangle, a square has: interior angles which measure 90∘ each. opposite sides that are parallel and equal.

### How do you prove something is not a square?

Approach 1. If we can prove that any of the angles inside the figure is not a right angle, then this would show that ABCD isn’t a square. AC2=(−3−9)2+(1+3)2=160,AD2+CD2=50+50=100. The figure is therefore not a square.

### Why is a square always a rectangle?

So a square is a special kind of rectangle, it is one where all the sides have the same length. Thus every square is a rectangle because it is a quadrilateral with all four angles right angles. However not every rectangle is a square, to be a square its sides must have the same length.

Is a rectangle never a square?

A rectangle is sometimes a square and a square is always a rectangle. Answer has 9 votes. A square is never a rectangle, but a rectangle can be a square. It’s kind of like “all poodles are dogs, but not all dogs are poodles” situation.

#### Is every square a rectangle?

Every square is a rectangle, but not every rectangle is a square. A rectangle always has 4 right angles. So does a square, so that can be considered a rectangle.

#### Are all squares rectangles?

All squares are rectangles. A rectangle has four right angles. However, not all rectangles are squares. A square does have four right angles, but the sides must also have the same measurement. So, only some rectangles are squares.