section 7-4: area of trapezoids, rhombuses and kites march 27, 2012
TRANSCRIPT
Section 7-4: Area of Trapezoids, Rhombuses, and Kites
Objective: Today you will learn to find areas of trapezoids, rhombuses, and kites.
Area of a Trapezoid
Area of a TrapezoidA = ½ h(b1 + b2)
Height of a trapezoid is the perpendicular distance between the bases.
B2 – Catch up from yesterday
Example 2: Find all sides of this triangle and then find the area – leave answer in simplest radical form.
B2 – Catch up from yesterday
Example 3: If a square has one side length of 5, what is the length of its diagonal?
Example 4: Find the angles and area of a rectangle with a diagonal of 6m and one side length of 3m. Round to nearest tenth.
B2 – Catch up from yesterday Softball Field Examples
On a high school softball field, the distance between bases is 60 ft.
1. To the nearest foot, how far does a catcher have to throw the ball from home to 2nd base? Round to nearest hundredth.
2. What is the perimeter of the softball field?
3. What is the area of the softball field?
Wrap-up Today you learned to find areas of trapezoids,
rhombuses, and kites. Tomorrow you’ll learn to find area of regular
polygons
Quiz on Sections 7-1 to 7-3 on Thursday!Homework (H) p. 376 – 377, #1-20, 22, 29-31, 34-36