Quadrilaterals [autosaved]

QUADRILATERALS

Good morning everyone! Before we will start our discussion for this day, lets have a prayer first. I request everyone to please stand up.

QUADRILATERALS

A Quadrilateral is a polygon with four sides.Quadrilateral just means four sides. (quadmeans four,lateralmeans side).A Quadrilateral hasfour-sides,2-dimensional(a flat shape),closed(the lines join up), and hasstraightsides.

Properties of Quadrilaterals:Four sides (edges)Four vertices (corners)The interior angles add up to360 degrees

ParallelogramRectangleRhombusSquareTrapezoidKiteTypes of Quadrilaterals:

ParallelogramA Parallelogram is a quadrilateral with two pairs of opposite sides parallel to each other. Opposite angles are also equal.

2. RectangleARectangleis a four-sided shape where every angle is a right angle (90). The opposite sides are also parallel and equal in length.

3. RhombusARhombus is a four-sided shape where all sides have equal length. The opposite sides are also parallelandopposite angles are equal. The diagonals bisect each other and meet in the middle at a right angle.

4. SquareA Squarehas equal sides and all angles are right angles or measures 90. The opposite sides are also parallel.

5. TrapezoidA Trapezoid is a quadrilateral with exactly one pair of opposite sides parallel to each other called the bases. The other non-parallel sides are called the legs.

It is called an Isosceles Trapezoid if the sides that aren't parallel are equal in length and both angles coming from a parallel side are equal.

6. KiteA Kite has two pairs of sides. Each pair is made up of adjacent sides that are equal in length. The angles are equal where the pairs meet. Diagonals meet at a right angle, and one diagonal bisects the other.

Family Tree

A1.

AB

2.Examples: Angles in QuadrilateralDirection: Find the Angles marked with letters.

ACB2.AB1.

Exercise 1: Angles in QuadrilateralDirection: Find the Angles marked with letters.

Assignment:

Using the Venn diagram, present the relationship of the types of Quadrilaterals. Write it in a one whole sheet of intermediate paper and pass it next meeting.

Prepared by:Francisco, Reymond C.

AExamples: Angles in QuadrilateralSolutions:back

Examples: Angles in QuadrilateralSolutions:

AB

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Exercise 1: Angles in QuadrilateralSolutions:AB

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ACBExercise 1: Angles in QuadrilateralSolutions:

Exercise 1: Angles in QuadrilateralSolutions:ACBback

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