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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 40

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 40
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 40
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 11° =
  2. Complement of 24° =
  3. Complement of 51° =
  4. Complement of 36° =
  5. Complement of 46° =
  6. Complement of 66° =
  7. Complement of 53° =
  8. Complement of 45° =
  9. Complement of 23° =
  10. Complement of 65° =
  11. Complement of 43° =
  12. Complement of 73° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 40
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 24° =
  2. Supplement of 95° =
  3. Supplement of 117° =
  4. Supplement of 41° =
  5. Supplement of 23° =
  6. Supplement of 84° =
  7. Supplement of 124° =
  8. Supplement of 11° =
  9. Supplement of 123° =
  10. Supplement of 153° =
  11. Supplement of 169° =
  12. Supplement of 60° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 40
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 83° and 27°. Find the third angle.
  2. A triangle has angles 60° and 48°. Find the third angle.
  3. A triangle has angles 44° and 39°. Find the third angle.
  4. A triangle has angles 46° and 62°. Find the third angle.
  5. A triangle has angles 98° and 44°. Find the third angle.
  6. A triangle has angles 62° and 63°. Find the third angle.
  7. A triangle has angles 64° and 29°. Find the third angle.
  8. A triangle has angles 33° and 34°. 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.