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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 12

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 12
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 12
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 37° =
  2. Complement of 60° =
  3. Complement of 85° =
  4. Complement of 53° =
  5. Complement of 62° =
  6. Complement of 35° =
  7. Complement of 66° =
  8. Complement of 24° =
  9. Complement of 77° =
  10. Complement of 82° =
  11. Complement of 19° =
  12. Complement of 56° =

Supplementary angles

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

Find the supplement.

  1. Supplement of 137° =
  2. Supplement of 110° =
  3. Supplement of 42° =
  4. Supplement of 43° =
  5. Supplement of 95° =
  6. Supplement of 30° =
  7. Supplement of 169° =
  8. Supplement of 97° =
  9. Supplement of 112° =
  10. Supplement of 166° =
  11. Supplement of 76° =
  12. Supplement of 23° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 12
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 61° and 67°. Find the third angle.
  2. A triangle has angles 72° and 20°. Find the third angle.
  3. A triangle has angles 28° and 99°. Find the third angle.
  4. A triangle has angles 53° and 73°. Find the third angle.
  5. A triangle has angles 24° and 38°. Find the third angle.
  6. A triangle has angles 81° and 55°. Find the third angle.
  7. A triangle has angles 86° and 39°. Find the third angle.
  8. A triangle has angles 28° and 85°. 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.