Tabla De Figuras Planas

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Tabla de Figuras Planas Triángulo Rectángulo B c

Donde: a.....hipotenusa. b catetos. c

a

A

b

ˆ = 90° A

C

S=

b×c 2

P=a +b+c

a2 = b2 + c2

Por el teorema de Pitagóras:

Triángulo Isósceles S=

l

B× h 2

l P= B+ 2⋅l

l

l=a

h=c

h

a2 = b2 + c2

Por el teorema de Pitagóras:

2

2

 B 2   h 2

B =b 2

B

Triángulo Equilátero S=

l

h

2

× 3 4

P=

l ×3

l h=

l



3

ap =

2



3

6

Cuadrado

l S=

D

l

l

l

l

P=

2

l ×4

D=



2

l Rectángulo

l D

S=

l ×a

Por el teorema de Pitagóras:

a2 = b2 + c2

a P = ( l + a) × 2

a=c

D=a D

l

a

l=b

1

Rombo

l

Por el teorema de Pitagóras: a2 = b2 + c2

l

S=

D×d 2

D =b 2

d D

l

l

P=

l =a

l ×4

l

d =c 2

2

2

D d      2  2

2

Trapecios 1- Trapecio Isósceles b c=

l

h

l

h

c

B+b S= ×h  2 

B-b 2

P = suma de lados externos. P=B+b+l +

l

c P=B+b+2l

B Por el teorema de Pitagóras:

a2 = b2 + c2

l=a

h=b

l2

h2

c2 c

2- Trapecio Rectángulo b

B+ b S= ×h  2 

c= B-b

h

l

h

P = suma de lados externos. P=B+b+h+l

c B Por el teorema de Pitagóras:

a2 = b2 + c2

l=a

h=b

l2

h2

c2 c

Circunferencia S = Co

Co = π × R 2

P = Cia

Cia = 2 × π × R

D = 2× R

D R

π = 3,14

2

Hexágono Regular

l=

l l

l

l Ap

R

l

P=

R

3×l2 × S= 2

3

Ap =

l ×6



3

2

3 = 1,73

l

3

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