Practice Problem-solving Techniques (2.5) - Quadrilaterals & Circles - IB 10 Mathematics

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9 questions

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6 questions · about 4 min · pass mark 70%. Hints available.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the missing angle in a quadrilateral if three angles measure 80°, 100°, and 90°?
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Recall the angle sum property of quadrilaterals.
Question 2.
Calculate the area of a circle with a radius of 5 cm.
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Use the formula A = πr².
3Question 3.
What is the sum of the angles in a quadrilateral?
- 360°
- 180°
- 540°
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Remember the total for polygons.
4Question 4.
True or False: The opposite angles in a parallelogram are equal.
- True
- False
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Reflect on the properties of quadrilaterals.
Question 5.
A quadrilateral has angles of x, x + 20°, 2x - 30°, and 4x + 10°. Find x.
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Combine like terms and solve for x.
Question 6.
A circle has an arc length of 15 cm that subtends a 30° angle at the center. Find the radius.
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Rearranging will help isolate r.

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