Q: Do all squares have ninety degree angles?

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Squares' sides are made up of 90 degree, or right angles. These angles are also acute (acute angles equaling ninety degrees or less). All angles in a square are equal, and they add up to 360 degrees.

Right angles are ninety degree angles. That is equal to one quarter of a complete rotation.

All have 90 degree angles.

because they are all the same size or shape. Because all squares have all the same length sides and are always made up of all 90 degree angles.

No, it can't be. 'Acute' means that all the angles are under ninety degrees; therefore, a ninety degree angle would make it impossible to have an acute triangle.

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Squares' sides are made up of 90 degree, or right angles. These angles are also acute (acute angles equaling ninety degrees or less). All angles in a square are equal, and they add up to 360 degrees.

Right angles are ninety degree angles. That is equal to one quarter of a complete rotation.

All have 90 degree angles.

Differences: Squares have 4 sides / equilateral triangles have 3 sides. Squares have 90 degree angles / equilateral triangles have 60 degree angles. Squares have 2 diagonals / equilateral triangles have none Similarities: All sides of the shape are congruent All angles of the shape are congruent

No, all squares are equilateral because they have four 90 degree angles.

It's called a rectangle, the sides must be same length in addition to it having all 90 angles for it to be a square.

A rhombus, which unlike a square, does not have to have all four ninety degree angles.

because they are all the same size or shape. Because all squares have all the same length sides and are always made up of all 90 degree angles.

triangles squares rectangles i think most shapes could have a 90 degree angle except a circle

The main thing squares and rhombuses have in common is that they have congruent sides all they way around. The only difference, however, is that squares have 90-degree angles, whereas rhombuses have 2 sets of congruent angles not equal to 90-degrees. They are also both polygons and all their internal angles adds up to 360.

No, it can't be. 'Acute' means that all the angles are under ninety degrees; therefore, a ninety degree angle would make it impossible to have an acute triangle.

All squares are a special type of rhombi. The special feature is that all angles of squares are equal.