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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 76

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 76
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 76
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 16° =
  2. Complement of 31° =
  3. Complement of 61° =
  4. Complement of 77° =
  5. Complement of 69° =
  6. Complement of 7° =
  7. Complement of 10° =
  8. Complement of 81° =
  9. Complement of 65° =
  10. Complement of 26° =
  11. Complement of 34° =
  12. Complement of 25° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 76
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 118° =
  2. Supplement of 141° =
  3. Supplement of 112° =
  4. Supplement of 73° =
  5. Supplement of 134° =
  6. Supplement of 148° =
  7. Supplement of 122° =
  8. Supplement of 152° =
  9. Supplement of 61° =
  10. Supplement of 28° =
  11. Supplement of 22° =
  12. Supplement of 52° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 76
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 81° and 23°. Find the third angle.
  2. A triangle has angles 70° and 40°. Find the third angle.
  3. A triangle has angles 35° and 47°. Find the third angle.
  4. A triangle has angles 52° and 60°. Find the third angle.
  5. A triangle has angles 50° and 24°. Find the third angle.
  6. A triangle has angles 46° and 100°. Find the third angle.
  7. A triangle has angles 39° and 104°. Find the third angle.
  8. A triangle has angles 98° and 43°. 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.