Area of Trapezia
Introduction
In the applet above, Step 0 shows a trapezium. Step 1 allows you to rotate a copy of the trapezium by a given angle (from 0 to 180°). What do you notice about the shape formed when the angle is 180°? Has it got a special type?
How would you find the area of the shape you identified in the previous question? What is the area of this shape?
Can we use this to find the area of the original trapezium? How?
What is the area of the trapezium?
- A
- B
- C
- D
- E
In the applet above, Step 0 shows a trapezium. Step 1 also allows you to rotate by a given angle (from 0 to 180°). What do you notice about the shape formed when the angle is 180°? Has it got a special type?
How would you find the area of the shape you identified in the previous question? What is the area of this shape?
Can we use this to find the area of the original trapezium? How?
What is the area of the trapezium?
- A
- B
- C
- D
- E
In the applet above, Step 0 shows a trapezium. Step 1 allows use of another slider. What does this slider do?
For either option, how could you find the area of the trapezium?
What is the area of the trapezium?
- A
- B
- C
- D
- E