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4 cards from this section. Quick, good the night before a test.
Define a quadrilateral.
Count the sides.
What is the sum of the interior angles in a quadrilateral?
Think about how many triangles fit inside.
What is the sum of the interior angles of a quadrilateral?
Remember how many triangles you can form.
True or False: A circle can have more than one center.
Think about the very definition of a circle.
Draw a quadrilateral with angles 80°, 90°, 110°, and an unknown angle. Calculate the missing angle.
Use the angle sum property for quadrilaterals.
A circle has a circumference of 62.83 cm. Calculate its radius and area.
Remember to use the value of π as approximately 3.14.
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