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Angles and Constructions - Free MCQ Practice Test with solutions,


MCQ Practice Test & Solutions: Test: Angles and Constructions (10 Questions)

You can prepare effectively for Class 8 Year 8 Mathematics IGCSE (Cambridge) with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Angles and Constructions". These 10 questions have been designed by the experts with the latest curriculum of Class 8 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 20 minutes
  • - Number of Questions: 10

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Test: Angles and Constructions - Question 1

The internal angles of a regular hexagon add up to 720o. How many degrees is each one?

Detailed Solution: Question 1

A regular hexagon has 6 equal internal angles, and their sum is 720°. Each angle is 720° ÷ 6 = 120°. Thus, the correct answer is 120° (Option C).

Test: Angles and Constructions - Question 2

Two interior angles in a triangle are 35o and 55o. What is the 3rd angle?

Detailed Solution: Question 2

The sum of interior angles in a triangle is 180°.
Given angles 35° and 55°, the third angle is 180° − (35° + 55°) = 180° − 90° = 90°.

Test: Angles and Constructions - Question 3

An angle that is between 90o and 180o is a(n) .......

Detailed Solution: Question 3

An angle between 90° and 180° is called an obtuse angle, as it is wider than a right angle (90°) but less than a straight line (180°). Thus, the correct answer is obtuse angle.

Test: Angles and Constructions - Question 4

Each internal angle of a regular pentagon is 108o. What is the total number of internal degrees?

Detailed Solution: Question 4

A pentagon has 5 sides, and the sum of its interior angles is (5 − 2) × 180° = 540°. For a regular pentagon, each internal angle is 540° ÷ 5 = 108°. Thus, 108° × 5 = 540°, so the total is 540°.

Test: Angles and Constructions - Question 5

An angle that is between 180o and 360o is a(n) .......

Detailed Solution: Question 5

An angle between 180° and 360° is called a reflex angle, as it is greater than a straight line (180°) but less than a full circle (360°). Thus, the correct answer is reflex angle.

Test: Angles and Constructions - Question 6

Angles on a straight line add up to what?

Detailed Solution: Question 6

Angles on a straight line sum to 180°, as a straight line represents a 180° angle (half a circle). Thus, the correct answer is 180°.

Test: Angles and Constructions - Question 7

Which of the following angles is an obtuse angle?

Detailed Solution: Question 7

An obtuse angle measures between 90° and 180°. Among the options, 45° is acute, 90° is a right angle, 120° is obtuse, and 180° is a straight angle. Thus, 120° is the correct answer.

Test: Angles and Constructions - Question 8

The three interior angles in a triangle add up to what?

Detailed Solution: Question 8

The sum of the interior angles of any triangle is always 180°. For example, in an equilateral triangle, each angle is 60° (3 × 60° = 180°), but this holds for all triangles. Thus, the correct answer is 180°.

Test: Angles and Constructions - Question 9

How do you construct a right angle using a compass and ruler?

Detailed Solution: Question 9

To construct a right angle, draw a line segment, place the compass at one endpoint to draw an arc intersecting the segment, then use additional arcs to locate the midpoint and draw a perpendicular line, forming a 90° angle. Thus, the correct answer is Option B.

Test: Angles and Constructions - Question 10

Which type of triangle has all sides of different lengths?

Detailed Solution: Question 10

A scalene triangle has all sides of different lengths, whereas an equilateral triangle has all sides equal, and an isosceles triangle has at least two sides equal.

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