Color Pencils Based Area and Perimeter Poster

TRIANGLE

a = 3cm

b = 4cm

c = 5cm

PERIMETER

AREA

P = a + b + c

P = 3cm + 4cm + 5cm

P = 12 cm

A = 1/2 (bh), h=a

A = 1/2 (3 cm x 4cm)

A = 1/2 (12 cm²)

A = 6 cm²

SQUARE

PERIMETER

AREA

S = 3in

P = 4s

P = 4 (3 in)

P = 12 in

A = s²

A = (3 in)²

A = 9 in²

RECTANGLE

P = 2l + 2h

A = s²

PERIMETER

AREA

TRAPEZOID

P = b₁ + b₂ + S₁ +S₂

A = [1/2(h) X (b₁ + b₂)

PERIMETER

AREA

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