Use a dynamic geometry software package to investigate the angles in a quadrilateral. 1 Draw a quadrilateral. Select ‘Polygon’. Create 4 points by clicking in the drawing window. To complete the polygon, click the first point again. B
A
C
D
2 Measure the size of each angle in the quadrilateral. Select the ‘Angle’ measure tool. Click on three points to measure the angle in between.
B
2
75.6°
A
C
1
3
D
Repeat for all the angles in the quadrilateral. Use your calculator to add up the angles in your triangle. Write down your additional sum.
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01/12/2021 15:00
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