QUADRILATERAL S Done By Lim Ren Yong Jewels
QUADRILATERAL S Done By; Lim Ren Yong, Jewels I-3
Quadrilate rals Quadrilateral just means "four sides“(quad means four, lateral means side). Any four-sided shape is a Quadrilateral. But the sides have to be straight, and it has to be 2 dimensional.
~Properties~ • • Four sides (or edges) Four vertex (or corners). The interior angles add up to 360 degrees All angles should add up to 360 degrees
Types of Quadrilaterals There are special • Some types are types of also included in quadrilateral: the definition of other types. For -Square -Kite example a square, -Parallelogram rhombus and -Rectangle rectangle are also parallelograms -Rhombus
Rectangles -The square represents the right angle -The lines shows the equal sides of the rectangle • A rectangle is a four-sided shape where every angle is a right angle (90°). • Also opposite sides are parallel and of equal length.
-Rhombus • A Rhombus is a four-sided shape where all sides • Another interesting have equal length. thing is that the • Also opposite sides diagonals (dashed lines are parallel and in second figure) of a opposite angles are rhombus bisect each equal. other at right angles.
Square -The small square represents the right angle -The lines shows the equal sides of the rectangle • A square has equal sides and every angle is a right angle (90°) • Also opposite sides are parallel. • A square also fits the definition of a rectangle (all angles are 90°), and a rhombus (all sides are equal length).
Parallelogram NOTE: Squares, Rectangles and Rhombuses are all Parallelograms! • Opposite sides are parallel and equal in length, and opposite angles are equal (angles "a" are the same, and angles "b" are the same) Example; A parallelogram with: -All sides equal -Angles "a" and "b" as right angles is a square
-It is called an Isosceles trapezium if the sides that aren't parallel are equal in length and both angles coming from a parallel side are equal, as shown. • A trapezium has one pair of opposite sides parallel.
• The small square represents the right angle • The lines shows the equal sides of the kite The kite has two pairs of sides. Each pair is made up of sides that are equal in length. The angles are equal where the pairs meet. Diagonals (the dashed lines) meet at a right angle, and one of the diagonal bisects (cuts equally in half) the
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