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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 66

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 66
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 66
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 59° =
  2. Complement of 57° =
  3. Complement of 45° =
  4. Complement of 67° =
  5. Complement of 37° =
  6. Complement of 33° =
  7. Complement of 34° =
  8. Complement of 25° =
  9. Complement of 44° =
  10. Complement of 19° =
  11. Complement of 24° =
  12. Complement of 73° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 66
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 28° =
  2. Supplement of 122° =
  3. Supplement of 63° =
  4. Supplement of 77° =
  5. Supplement of 16° =
  6. Supplement of 156° =
  7. Supplement of 61° =
  8. Supplement of 66° =
  9. Supplement of 169° =
  10. Supplement of 47° =
  11. Supplement of 24° =
  12. Supplement of 73° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 66
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 74° and 53°. Find the third angle.
  2. A triangle has angles 41° and 104°. Find the third angle.
  3. A triangle has angles 75° and 42°. Find the third angle.
  4. A triangle has angles 86° and 45°. Find the third angle.
  5. A triangle has angles 70° and 47°. Find the third angle.
  6. A triangle has angles 34° and 54°. Find the third angle.
  7. A triangle has angles 41° and 63°. Find the third angle.
  8. A triangle has angles 21° and 55°. 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.