Unit 8 – 3 Finding Perimeter and Area Regular polygons and simple shapes with algebraic expressions.

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Presentation transcript:

Unit 8 – 3 Finding Perimeter and Area Regular polygons and simple shapes with algebraic expressions

Formulas for Area  Parallelogram (rectangle)  Triangle  Circle  Trapezoid  Rhombus/kite  Regular Polygon

Find the area -- Examples 10 in 12 mm 24 cm 8 mm I am a square 7 mi

Find the area -- Examples 8 cm 12 Ft

Find the area -- Examples 8 cm 12 Ft

Find the perimeter and area -- Examples 5x + 6 ft 2x – 1 ft 5x yd

Find the perimeter and area -- Examples 2x m (horizontal diagonal) 4x 2 + 5x m (vertical diagonal) 5(x + 1) in 3x in x + 3 in 3x 2 (side) Rhombus

Word problems  Graph the points A (1, 3) B (4, 7) C ( 7, 3) D ( 4, -1)  This shape is a _______________________________________  Find the Perimeter  Find the Area

Word problems  Graph the points A (-1, 2) B (3, 5) C (6, 1)  This shape is a _______________________________________  Find the Perimeter  Find the Area

Word problems  Graph the points A (-1, -1) B (2, 4) C (8, 4)  This shape is a _______________________________________  Find the Perimeter  Find the Area