Unit 6 · Class 6 IB MYP · MCQ Test
Geometry Basics MCQ Test — Class 6 IB MYP
Practice 10 multiple-choice questions with instant answer reveal and explanations.
Geometry Basics — MCQ Questions
1What is the sum of angles in a triangle?
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Answer: 180°
Hint: This is a fundamental property of all triangles.
Solution:
The angles of any triangle always add up to 180°.
2A triangle has angles of 60° and 70°. What is the third angle?
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Answer: 50°
Hint: Angles sum to 180°. Subtract the known angles.
Solution:
Third angle: — 180° - 60° - 70° = 50°
3How many sides does a hexagon have?
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Answer: 6
Hint: 'Hex' means six.
Solution:
A hexagon has 6 sides.
4What type of angle is 90°?
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Answer: Right
Hint: Think of the corner of a book or page.
Solution:
A 90° angle is called a right angle.
5What is the name of a triangle with all three sides equal?
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Answer: Equilateral
Hint: 'Equi' means equal, 'lateral' means sides.
Solution:
All three sides equal = equilateral triangle. Each angle = 60°.
6An angle measuring 135° is classified as:
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Answer: Obtuse
Hint: Obtuse angles are between 90° and 180°.
Solution:
135° is between 90° and 180°, so it is obtuse.
7What is the sum of angles in a quadrilateral?
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Answer: 360°
Hint: A quadrilateral can be split into 2 triangles.
Solution:
Sum of angles: — 2 \times 180° = 360°
8How many lines of symmetry does a square have?
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Answer: 4
Hint: Think of folding the square along different lines.
Solution:
A square has 4 lines of symmetry: 2 diagonal and 2 through midpoints of sides.
9What is the complement of a 35° angle?
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Answer: 55°
Hint: Complementary angles sum to 90°.
Solution:
Complement: — 90° - 35° = 55°
10What is the supplement of a 110° angle?
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Answer: 70°
Hint: Supplementary angles sum to 180°.
Solution:
Supplement: — 180° - 110° = 70°
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Tips for Geometry Basics MCQs
- 1Read each question carefully and identify what is being asked before looking at the options.
- 2Try to solve the problem mentally or on paper first, then match your answer with the options.
- 3Use elimination — rule out clearly wrong options to improve your chances even when unsure.
- 4Check units, signs, and edge cases — these are common traps in Geometry Basics MCQs.
- 5Review your mistakes after completing the test to build lasting understanding.
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