Section 7 –4 Area of Trapezoids, Rhombuses, & Kites

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Transcript Section 7 –4 Area of Trapezoids, Rhombuses, & Kites 

Section 7 –4
Area of Trapezoids,
Rhombuses, & Kites
Objectives:
To find the area of a trapezoid
To find the area of a kite or a rhombus
Trapezoid
Height of a Trapezoid:
The perpendicular distance between
the bases.
Area of a Trapezoid
𝟏
𝑨𝒓𝒆𝒂 𝒐𝒇 𝒂 π‘»π’“π’‚π’‘π’†π’›π’π’Šπ’… = 𝒉(π’ƒπŸ + π’ƒπŸ )
𝟐
Example 1
A)
Real-World Connection
Approximate the area of Arkansas.
B) Find the area of a trapezoid with height
7cm and bases 12 cm and 15 cm.
C)
Find the area of the trapezoid.
Example 2
Using Area of a
Trapezoid
A) Find the area of trapezoid PQRS. Leave
your answer in simplest radical form.
B)
Find the area of the trapezoid. Leave your
answer in simplest radical form.
C)
Find the area of the trapezoid. Leave your
answer in simplest radical form.
D) Find the area of the trapezoid. Leave your
answer in simplest radical form.
Homework:
Textbook Page 376; #2 – 12 Even
Section 7 –4
Continued…
Objectives:
To find the area of a kite or a rhombus
Area of a Rhombus/Kite
𝟏
𝑨𝒓𝒆𝒂 𝒐𝒇 𝒂 π‘Ήπ’‰π’π’Žπ’ƒπ’–π’”/π‘²π’Šπ’•π’† = π’…πŸ π’…πŸ
𝟐
Example 3
A)
Finding the Area of a Kite
Find the area of KLMN
B) Find the area of a kite with diagonals that
are 12 in. and 9 in. long.
C)
Find the area of kite XYZW.
Example 4
A)
Finding the Area of a
Rhombus
Find the area of rhombus ABCD.
B)
Find the area of rhombus RSTU.
C)
Find the area of the rhombus below.
D) Find the area of the rhombus below. Leave
your answer in simplest radical form.
Homework
7 – 4 Ditto; Odds Only