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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 32

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 32
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 32
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 80° =
  2. Complement of 25° =
  3. Complement of 13° =
  4. Complement of 79° =
  5. Complement of 75° =
  6. Complement of 46° =
  7. Complement of 24° =
  8. Complement of 72° =
  9. Complement of 78° =
  10. Complement of 49° =
  11. Complement of 38° =
  12. Complement of 43° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 32
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 109° =
  2. Supplement of 64° =
  3. Supplement of 80° =
  4. Supplement of 157° =
  5. Supplement of 100° =
  6. Supplement of 90° =
  7. Supplement of 151° =
  8. Supplement of 138° =
  9. Supplement of 54° =
  10. Supplement of 107° =
  11. Supplement of 33° =
  12. Supplement of 142° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 32
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 38° and 67°. Find the third angle.
  2. A triangle has angles 89° and 32°. Find the third angle.
  3. A triangle has angles 97° and 51°. Find the third angle.
  4. A triangle has angles 71° and 58°. Find the third angle.
  5. A triangle has angles 100° and 28°. Find the third angle.
  6. A triangle has angles 57° and 65°. Find the third angle.
  7. A triangle has angles 84° and 47°. Find the third angle.
  8. A triangle has angles 72° and 32°. 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.