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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 58

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 58
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 58
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 70° =
  2. Complement of 77° =
  3. Complement of 19° =
  4. Complement of 55° =
  5. Complement of 64° =
  6. Complement of 78° =
  7. Complement of 28° =
  8. Complement of 9° =
  9. Complement of 22° =
  10. Complement of 81° =
  11. Complement of 47° =
  12. Complement of 13° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 58
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 140° =
  2. Supplement of 77° =
  3. Supplement of 91° =
  4. Supplement of 59° =
  5. Supplement of 75° =
  6. Supplement of 145° =
  7. Supplement of 128° =
  8. Supplement of 80° =
  9. Supplement of 74° =
  10. Supplement of 94° =
  11. Supplement of 29° =
  12. Supplement of 157° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 58
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 79° and 68°. Find the third angle.
  2. A triangle has angles 61° and 64°. Find the third angle.
  3. A triangle has angles 32° and 118°. Find the third angle.
  4. A triangle has angles 49° and 27°. Find the third angle.
  5. A triangle has angles 85° and 64°. Find the third angle.
  6. A triangle has angles 27° and 32°. Find the third angle.
  7. A triangle has angles 61° and 80°. Find the third angle.
  8. A triangle has angles 81° and 23°. 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.