Geometry for Dummies
Learn all about shapes and angles!
Acute angle- An angle less than 90 degrees.
Obtuse Angle - An angle sized between 90 an 180 degrees.
Straight angle-180 degree angle.
Right Angle- An 90 degree angle.
Quadrilateral-a shape with four straight sides.
Square-a shape with four even sides.
Rectangle-a shape with two long sides and two short sides that are made of right angles.
Rhombus-a square turned on it's side.
Trapezoid-a quadrilateral with only one set of parallel lines.
parallelogram-a shape with all parallel lines.