Geometry Warm up.

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Presentation transcript:

Geometry Warm up

10-2 Area of trapezoids, rhombuses, and kites

Quick Review-- What’s Pythag. Thm? a2 + b2 = c2 45-45-90 multiply or divide by 2 30-60-90 𝐿→𝐵 𝑡𝑖𝑚𝑒𝑠 𝑏𝑦 3 𝑑𝑖𝑣𝑖𝑑𝑒 𝐵→𝐿 𝐿→𝐻 𝑡𝑖𝑚𝑒𝑠 𝑏𝑦 2 𝑑𝑖𝑣𝑖𝑑𝑒 𝐻→𝐿

Area of a Trapezoid The height of a trapezoid is the perpendicular distance between the bases. You can find the area of a trap when you know the height and lengths of its bases.

Problem 1 What is the area of Nevada?

TOO  (answer is a decimal) What is the area of a trapezoid with height 7cm and bases 12 cm and 15 cm?

Problem 2 What is the area of trapezoid PQRS? DROP A 90!!!!!!

TWAP Find the area of the Trapezoid. 12 3√3 30° 9 12 9 30° 30

Area of Rhombus or a Kite You can find the area of a rhombus or a kite when you know the lengths of its diagonals. Kites and Rhombi have Perpendicular diags!!

Problem 3 What is the area of kite KLMN?

TOO  What is the area of a kite with diagonals that are 12 in. and 9 in. long?

Problem 4 Find the area of the Rhombus 5 4 A = 24 5 5 5

TOO

Homework Pg. 626 # 11 – 26 all