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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 69

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 69
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 69
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 69° =
  2. Complement of 32° =
  3. Complement of 37° =
  4. Complement of 62° =
  5. Complement of 12° =
  6. Complement of 57° =
  7. Complement of 14° =
  8. Complement of 61° =
  9. Complement of 25° =
  10. Complement of 35° =
  11. Complement of 18° =
  12. Complement of 80° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 69
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 154° =
  2. Supplement of 157° =
  3. Supplement of 53° =
  4. Supplement of 84° =
  5. Supplement of 33° =
  6. Supplement of 58° =
  7. Supplement of 98° =
  8. Supplement of 139° =
  9. Supplement of 113° =
  10. Supplement of 89° =
  11. Supplement of 20° =
  12. Supplement of 17° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 69
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 65° and 79°. Find the third angle.
  2. A triangle has angles 97° and 28°. Find the third angle.
  3. A triangle has angles 97° and 52°. Find the third angle.
  4. A triangle has angles 66° and 29°. Find the third angle.
  5. A triangle has angles 97° and 44°. Find the third angle.
  6. A triangle has angles 36° and 85°. Find the third angle.
  7. A triangle has angles 65° and 25°. Find the third angle.
  8. A triangle has angles 86° and 31°. 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.