Euclidean geometry/Parallel lines, quadrilaterals, and circles
Summary of Chapter
[edit | edit source]To understand the properties of parallel lines, quadlaterals and circles.
Quadrilaterals
[edit | edit source]A quadlateral is defined as any 4 sided polygon.
Special quadrilaterals
[edit | edit source]Parallelograms
[edit | edit source]A parallelogram is a quadrilateral with equal opposite angles and opposite sides with equal length.
Rectangles
[edit | edit source]A Rectangle is a parallelogram with all right angles.
Squares
[edit | edit source]A square is a rectangle in which the lengths of all the sides are equal.
Circles
[edit | edit source]A circle is the set of points in a plane that are a given distance from a given point, the center. The distance between any of the points and the center is called the radius.