Mrs.D Math · 7th Grade

POLY
BLITZ

Area of Polygons
△ A = ½bh
▱ A = bh
△ A = ½(b₁+b₂)h
♦ A = ½d₁d₂
△ Triangle
▱ Parallelogram
▯ Trapezoid
♦ Rhombus
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📚 Area of Polygons

△ Triangle

A = ½bh
b = 6h = 4
A = ½×6×4 = 12

▱ Parallelogram

A = bh
b = 8h = 5
A = 8×5 = 40

▯ Trapezoid

A = ½(b₁+b₂)h
b = 4b = 8h = 5
A = ½×(4+8)×5 = 30

♦ Rhombus

A = ½d₁d₂
d = 6d = 10
A = ½×6×10 = 30
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