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Category: Education

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By: urmail4ashish (95 month(s) ago)

Very Good Presentation

By: chanmeet (96 month(s) ago)

great 1

By: okcsandy (109 month(s) ago)

This is great!!! Can't wait to use this!!!

## Presentation Transcript

### Slide 1:

WELCOME TO THE WORLD OF QUADRILATERALS

### OBJECTIVES: :

OBJECTIVES: At the end of the lesson, the students should be able to know the different types of a quadrilaterals and how they relate to one another.

QUADRILATERALS - A quadrilateral is a polygon of four sides. This particular polygon can be classified into parallelograms with opposite sides parallel and trapezoids with exactly two parallel sides.

### TRAPEZOID :

TRAPEZOID A trapezoid is a quadrilateral with exactly a pair of parallel sides. K L M N leg leg base base base angles KLMN is a trapezoid. LM is parallel to KN. In symbols, LM KN. The parallel sides of a trapezoid are called bases, and the nonparallel sides are called legs.

### Slide 7:

A B C D If the legs of a trapezoid are congruent, the trapezoid is isosceles. ABCD is an isosceles trapezoid.

### Slide 8:

D E C S If a quadrilateral has no parallel sides, it is called a trapezium. DECS is a trapezium.

### PARALLELOGRAM :

PARALLELOGRAM A Parallelogram is a quadrilateral with two pairs of congruent and parallel sides. C D E F CDEF is a parallelogram. DE ?CF, DE CF DC EF, DC EF ?

### THREE SPECIAL PARALLELOGRAMS :

THREE SPECIAL PARALLELOGRAMS RECTANGLE -A rectangle is parallelogram with four right angles. F G H I FGHI is a rectangle. <F, <G, <H, <I are right angles.

### RHOMBUS :

RHOMBUS - A rhombus is a parallelogram with four congruent sides. P O N M MNOP is a rhombus. MN ? NO ? OP ? PM

### SQUARE :

SQUARE -A square is a parallelogram with four congruent sides and four congruent angles. Q T R S QRST is a square. QR ? RS ? ST ? TQ <Q, <R, <S, <T are right angles.

### Presented by: RICHARD RAY B. SEGOVIA :

Presented by: RICHARD RAY B. SEGOVIA Presented to: Mr. Salvador Salazar

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