Discovery Activity - Quadrilaterals & Parallelograms
Quadrilateral: a four sided figure.
Draw any quadrilateral below. Measure each angle.
What is the sum of the angles?
360
Answer the questions below[br]
Measure the angles of the figure below.
What is the sum of all the angles?
360
What is the sum of angles A and B?
180
What is the sum of angles A and C?
180
What is the sum of angles B and D?
180
What is the sum of angles C and D?
180
What do you notice about angles A and D?
They are congruent
What do you notice about angles B and C?
They are congruent
Measure the sides of the figure below.
What do you notice about the of the sides of the figure?
[math]AB\cong CD[/math][br][math]AC\cong BD[/math][br]Both sets of sides are also parallel
One diagonal has been added to the figure. Measure all the angles created by the diagonal.
What do you notice about the angles?
Alternate Interior Angles are created[br] [math]\angle ACB\cong\angle DBC[/math] and [math]\angle ABC\cong\angle DCB[/math]
The second diagonal has been added to the figure. Measure the segments created.
What do you notice about segments AD and BC?
They bisect each other
Summarize the information you learned about Parallelograms. Create a way to present this to the class.
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Information: Discovery Activity - Quadrilaterals & Parallelograms