Grade 4 Mathematics – Angles Quiz
1. What is the sum of the angles in a triangle?
The sum of the angles in a triangle is always 180 degrees. This is a fundamental property of triangles in geometry.
2. What is the name of an angle that measures exactly 90 degrees?
An angle that measures exactly 90 degrees is called a right angle. It forms the basis for many geometric concepts.
3. Which of the following angles is greater than a right angle?
An obtuse angle measures between 90 and 180 degrees, making it greater than a right angle.
4. What is the name of an angle that measures more than 180 degrees?
A reflex angle is an angle that measures more than 180 degrees. It is commonly seen in circular shapes and polygons.
5. If two angles are complementary, what is their sum?
Complementary angles are two angles that add up to 90 degrees. They are often seen in right triangles.
6. What is the name of an angle that measures less than 90 degrees?
An acute angle measures less than 90 degrees. It is commonly found in acute triangles.
7. One complete rotation is equal to how many degrees?
A full rotation or circle is equal to 360 degrees. This is a fundamental concept in geometry.
8. Which of the following angles is less than a right angle?
An acute angle is less than a right angle, measuring less than 90 degrees.
9. What is the name of an angle that is exactly 180 degrees?
A straight angle measures exactly 180 degrees, forming a straight line.
10. If two angles are supplementary, what is their sum?
Supplementary angles add up to 180 degrees. They are often seen in linear pairs or straight lines.
11. What is the sum of all interior angles of a triangle?
The sum of all interior angles of a triangle is always 180 degrees.
12. What type of angle is formed when two lines are perpendicular to each other?
When two lines are perpendicular to each other, they form a right angle, which measures 90 degrees.
13. How many degrees are there in a straight angle?
A straight angle measures 180 degrees.
14. Which angle is greater: 120 degrees or 150 degrees?
150 degrees is greater than 120 degrees.
15. What is the complement of a 30-degree angle?
The complement of a 30-degree angle is 60 degrees, as they add up to 90 degrees.
16. What is the supplement of a 120-degree angle?
The supplement of a 120-degree angle is 60 degrees, as they add up to 180 degrees.
17. Which type of angle is smaller than a right angle?
An acute angle is smaller than a right angle and measures less than 90 degrees.
18. What is the name of an angle that measures more than 90 degrees but less than 180 degrees?
An obtuse angle measures more than 90 degrees but less than 180 degrees.
19. How many degrees are there in a reflex angle?
A reflex angle measures 360 degrees.
20. What is the name of an angle that measures exactly 90 degrees?
An angle that measures exactly 90 degrees is called a right angle.
21. What is the name of an angle that measures more than 180 degrees but less than 360 degrees?
A reflex angle measures more than 180 degrees but less than 360 degrees.
22. What is the name of an angle that measures exactly 180 degrees?
An angle that measures exactly 180 degrees is called a straight angle.
23. Which type of angle is greater than a right angle but less than a reflex angle?
An obtuse angle is greater than a right angle but less than a reflex angle.
24. What is the angle measurement of an equilateral triangle?
An equilateral triangle has all angles measuring 60 degrees each.
25. What type of angle is formed when two lines are parallel to each other and a transversal line intersects them?
Alternate interior angles are formed when two lines are parallel and a transversal cuts through them.
26. What is the name of a pair of angles that add up to 180 degrees and are on the same line?
Supplementary angles add up to 180 degrees and are on the same line.
27. What is the name of a pair of angles that add up to 90 degrees and are adjacent to each other?
Complementary angles add up to 90 degrees and are adjacent to each other.
28. What is the name of a pair of non-adjacent angles formed by intersecting lines?
Vertical angles are formed by intersecting lines and are non-adjacent to each other.
29. In a right-angled triangle, what is the name of the side opposite the right angle?
In a right-angled triangle, the side opposite the right angle is called the hypotenuse.
30. What is the name of a pair of angles on the same side of the transversal line and inside the two lines it intersects?
Alternate interior angles are on the same side of the transversal and inside the intersecting lines.
31. In a quadrilateral, the sum of all interior angles is?
The sum of all interior angles of a quadrilateral is always 360 degrees.
32. What is the name of a pair of angles on opposite sides of the transversal line but inside the two lines it intersects?
Corresponding angles are on opposite sides of the transversal and inside the intersecting lines.
33. What is the name of a pair of angles that are adjacent and on opposite sides of the transversal line?
Alternate exterior angles are adjacent and on opposite sides of the transversal line.
34. In a trapezium, the sum of the interior angles that are on the same side of the transversal line is?
The sum of the interior angles on the same side of the transversal line in a trapezium is always 180 degrees.
35. What is the name of a pair of angles that are on opposite sides of the transversal line and outside the two lines it intersects?
Vertical angles are on opposite sides of the transversal and outside the intersecting lines.