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Sum of angles of quadrilaterals

Author:
Fathima G

Use the quadrilateral below to answer the questions provided

Question 1

Add angles A, B, C and D. What is the total sum?

Question 2

Click and drag the vertices of the quadrilateral to new locations. Add the new measures of angles A, B, C and D. What is the new sum?

Question 3

So, the interior angles of a quadrilateral always adds up to________