"Quadrilateral" simply means "four sided". Some quadrilaterals do have right angles; squares or rectangles, for example. Some have one or two right angles, but some don't have any right (90 degree) angles.
Yes a rectangle for example
Some irregular hepagons, for example.Some irregular hepagons, for example.Some irregular hepagons, for example.Some irregular hepagons, for example.
No, all four angles with in a rectangle are right angles.
All right angle triangles have a 90 degree angle and two acute angles that add up to 90 degrees.
"Quadrilateral" simply means "four sided". Some quadrilaterals do have right angles; squares or rectangles, for example. Some have one or two right angles, but some don't have any right (90 degree) angles.
Yes a rectangle for example
Some trapezoids For example, the angles of a trapezoid could be: 90, 90, 30, 150
Some irregular hepagons, for example.Some irregular hepagons, for example.Some irregular hepagons, for example.Some irregular hepagons, for example.
Yes, a trapezoid can have 3 right angles.
No, all four angles with in a rectangle are right angles.
Yes . Some might have acute angles . Most likely right angles .
All right angle triangles have a 90 degree angle and two acute angles that add up to 90 degrees.
Some do, but not all.
Rectangles have 4 rift angles and some parallelogram doesn't have 4 right angles. Only two parallelogram has 4 right angles , square and rectangle
No, some may
Some are larger and some smaller. Also they can be at right angles to each other. See the Related Link below for an example.