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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 73

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 73
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 73
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 49° =
  2. Complement of 82° =
  3. Complement of 37° =
  4. Complement of 20° =
  5. Complement of 11° =
  6. Complement of 83° =
  7. Complement of 81° =
  8. Complement of 77° =
  9. Complement of 79° =
  10. Complement of 53° =
  11. Complement of 22° =
  12. Complement of 66° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 73
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 96° =
  2. Supplement of 160° =
  3. Supplement of 82° =
  4. Supplement of 119° =
  5. Supplement of 48° =
  6. Supplement of 75° =
  7. Supplement of 46° =
  8. Supplement of 143° =
  9. Supplement of 45° =
  10. Supplement of 73° =
  11. Supplement of 88° =
  12. Supplement of 136° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 73
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 98° and 31°. Find the third angle.
  2. A triangle has angles 55° and 35°. Find the third angle.
  3. A triangle has angles 61° and 57°. Find the third angle.
  4. A triangle has angles 49° and 77°. Find the third angle.
  5. A triangle has angles 86° and 30°. Find the third angle.
  6. A triangle has angles 60° and 69°. Find the third angle.
  7. A triangle has angles 73° and 58°. Find the third angle.
  8. A triangle has angles 58° and 62°. 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.