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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 9

Angles worksheets — types of angles and angle sums

Free angles worksheets for Class 4 to 7: name the type of angle (acute, right, obtuse, straight, reflex), complementary, supplementary and triangle angles — with answers.

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Types of angles (Class 4–5)Complementary angles (Class 6–7)Supplementary angles (Class 6–7)Angles of a triangle (Class 6–7)

Types of angles

Class 4–5 · Worksheet 1 · set 9
Name:Date:Score:    / 8

Name the type of the marked angle: acute, right, obtuse, straight or reflex.

  1. Type of angle?
  2. Type of angle?
  3. Type of angle?
  4. Type of angle?
  5. Type of angle?
  6. Type of angle?
  7. Type of angle?
  8. Type of angle?

Complementary angles

Class 6–7 · Worksheet 2 · set 9
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 79° =
  2. Complement of 19° =
  3. Complement of 58° =
  4. Complement of 15° =
  5. Complement of 61° =
  6. Complement of 76° =
  7. Complement of 13° =
  8. Complement of 85° =
  9. Complement of 25° =
  10. Complement of 39° =
  11. Complement of 62° =
  12. Complement of 69° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 9
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 86° =
  2. Supplement of 168° =
  3. Supplement of 117° =
  4. Supplement of 29° =
  5. Supplement of 28° =
  6. Supplement of 56° =
  7. Supplement of 48° =
  8. Supplement of 85° =
  9. Supplement of 84° =
  10. Supplement of 11° =
  11. Supplement of 68° =
  12. Supplement of 96° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 9
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 59° and 34°. Find the third angle.
  2. A triangle has angles 63° and 80°. Find the third angle.
  3. A triangle has angles 47° and 24°. Find the third angle.
  4. A triangle has angles 35° and 31°. Find the third angle.
  5. A triangle has angles 54° and 59°. Find the third angle.
  6. A triangle has angles 29° and 53°. Find the third angle.
  7. A triangle has angles 58° and 37°. Find the third angle.
  8. A triangle has angles 97° and 20°. Find the third angle.

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Questions

What are the 5 types of angles?

Acute (less than 90°), right (90°), obtuse (90°–180°), straight (180°) and reflex (180°–360°).

Are these worksheets free?

Yes — print them or save as PDF free. Every worksheet has an answer key.

How do I get different questions?

Press “🔄 New set” — the questions change (maths numbers are new every time; English sentences are shuffled).

How do I print only one worksheet?

Press “🖨️ Print” on that worksheet. Tick “with answer key” if you want the answers on a second page.

Can my child do this worksheet online, like a quiz?

Yes — press “▶️ Practise online” on any worksheet. The questions come one at a time with instant marking, a score at the end and a review of mistakes. No sign-in is needed.