GeoGebra Classroom

# Discovery Activity - Quadrilaterals & Squares

Quadrilateral: a four sided figure.
Draw any quadrilateral below. Measure each angle.

What is the sum of the angles?

Answer the questions below
Measure the angles of the figure below.

What is the sum of the angles?

How are angles A, B, C, and D related?

Are sides AD and BC parallel? Explain

Are sides AB and CD parallel? Explain

Measure the sides of the figure below.

What do you notice about the sides of the figure?

One of the diagonals was added to the figure. Measure the angles created by the diagonal.

What do you notice about the angles created?

The second diagonal was added to the figure. Measure the segments created by the diagonals.

What do you notice about the diagonals?

Measure the angles created by the two diagonals.

What do you notice about , , , and ?

What kind of triangles are created by the diagonals?

Summarize the information you learned about squares and its properties. Create a short presentation to give to the class.