Graphing a Trapezoid in MathAS

This video tutorial guides students on how to use the MathAS graphing tool to plot a trapezoid. It begins with an introduction to the tool, followed by an explanation of the trapezoid's properties and the points to plot. The instructor provides a step-by-step guide to plotting each side of the trapezoid, ensuring students understand how to start and end segments. The video concludes with tips on adjusting the graph size using keyboard shortcuts.

What is the main purpose of this video tutorial?

• To provide a review of basic geometry concepts.

• To explain the history of trapezoids.

• To demonstrate the use of MathAS for graphing a trapezoid.

• To teach students how to solve algebraic equations.

Which of the following best describes a trapezoid?

• A triangle with one right angle.

• A four-sided polygon with one pair of parallel sides.

• A quadrilateral with two pairs of parallel sides.

• A polygon with all sides equal.

What are the coordinates of the points that define the trapezoid?

• (4, 5), (5, 6), (6, 7), (7, 8)

• (-1, 2), (0, 3), (1, 4), (2, 5)

• (0, 0), (1, 1), (2, 2), (3, 3)

• (-3, 4), (-2, 3), (2, 3), (3, 4)

What is the first step in plotting the trapezoid on paper?

• Plot the trapezoid on paper first.

• Draw a circle around the trapezoid.

• Plot the trapezoid on the computer first.

• Graph each side of the trapezoid.

How do you start a segment or side in the MathAS graphing tool?

• By single-clicking the starting point.

• By dragging the mouse from start to end.

• By double-clicking the starting point.

• By pressing the spacebar.

What action is required to complete a segment or side in the MathAS tool?

• Right-clicking the endpoint.

• Double-clicking the endpoint.

• Pressing the enter key.

• Dragging the mouse to the endpoint.

Which point is the starting point for the first side of the trapezoid?

• (3, 4)

• (-3, 4)

• (2, 3)

• (-2, 3)

What is the final step in plotting the trapezoid?

• Right-clicking the last point.

• Single-clicking the last point.

• Double-clicking the last point.

• Pressing the escape key.

How can you enlarge the graph in MathAS?

• By dragging the corners of the graph.

• By holding down the control button and tapping the plus sign.

• By pressing the F11 key.

• By clicking the enlarge button.

What should you do if you want to make the graph smaller?

• Drag the graph to the left.

• Hold down the control key and tap the minus key.

• Click the minimize button.

• Press the escape key.