alleryStart learning →An angle measures 72 degrees. What type of angle is it?
- Right angle
- Acute angle
- Obtuse angle
- Reflex angle
Show answer and solution
Correct answer: B. Acute angle
72 degrees is less than 90 degrees, so the angle is acute.
Olympiad (Class 5) Angle — practice questions
Explore 62 free Angle questions in Olympiad (Class 5) Mathematics. Open each question or exercise to read its content, reference answers and available explanation.
Practise Angle with Quill →Angle questions and exercises with answers
Showing questions 1–30 of 62.
An angle measures 72 degrees. What type of angle is it?Read the answer and worked solution →Which of these angle measures is an obtuse angle?Read the answer and worked solution →The corner of a book page measures exactly 90 degrees. What is this angle called?Read the answer and worked solution →How many degrees are there in half of a full turn?Read the answer and worked solution →A minute hand starts at 12 and goes round once to return to 12. How many degrees did it turn?Read the answer and worked solution →A door stays closed and is not turned at all. What is the angle it has turned through?Read the answer and worked solution →In an angle, what is the common point where the two sides meet called?Read the answer and worked solution →One of two complementary angles measures 35 degrees. What does the other measure?Read the answer and worked solution →The supplement of a 123 degree angle is how many degrees?Read the answer and worked solution →Two complementary angles are such that one is twice the other. What is the smaller angle?Read the answer and worked solution →Two angles together make a full angle. One of them is 250 degrees. What is the other?Read the answer and worked solution →In a right-angled triangle one acute angle is 38 degrees. What is the other acute angle?Read the answer and worked solution →The angles of a triangle are in the ratio 1 : 2 : 3. What is the largest angle?Read the answer and worked solution →All three angles of a triangle are equal. How large is each angle?Read the answer and worked solution →Three angles of a four-sided shape are 85, 95 and 110 degrees. What is the fourth angle?Read the answer and worked solution →What is the sum of the interior angles of a hexagon?Read the answer and worked solution →How large is each interior angle of a regular octagon?Read the answer and worked solution →The interior angles of a polygon add up to 1440 degrees. How many sides does it have?Read the answer and worked solution →Two straight lines cross and one of the four angles is 50 degrees. What is the angle directly opposite it?Read the answer and worked solution →Two lines cross and one angle is 50 degrees. What is the angle next to it on the same straight line?Read the answer and worked solution →How many angles are formed when two straight lines cross at one point?Read the answer and worked solution →What is the sum of all four angles formed where two straight lines cross?Read the answer and worked solution →Two lines cross. One angle is 3x degrees and the angle opposite it is (x + 40) degrees. What is the angle?Read the answer and worked solution →Two angles on a straight line are x and (2x + 30) degrees. What is the larger angle?Read the answer and worked solution →Two angles sharing a common vertex and a common arm without overlapping are called what?Read the answer and worked solution →Two lines that meet each other at 90 degrees are called what?Read the answer and worked solution →A polygon has 7 corners. How many sides does it have?Read the answer and worked solution →A polygon with 6 sides is called a 6-gon. What is its more common name?Read the answer and worked solution →Which description fits a regular polygon?Read the answer and worked solution →A four-sided shape has all angles equal but its sides are not all equal. Which shape is it?Read the answer and worked solution →
Worked practice questions
Which of these angle measures is an obtuse angle?
- 85°
- 90°
- 180°
- 125°
Show answer and solution
Correct answer: D. 125°
An obtuse angle lies between 90 and 180 degrees, and only 125 degrees is in that range.
The corner of a book page measures exactly 90 degrees. What is this angle called?
- Acute angle
- Obtuse angle
- Right angle
- Straight angle
Show answer and solution
Correct answer: C. Right angle
An angle of exactly 90 degrees, a quarter turn, is a right angle.
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