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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 17

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 17
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 17
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 34° =
  2. Complement of 58° =
  3. Complement of 27° =
  4. Complement of 62° =
  5. Complement of 65° =
  6. Complement of 66° =
  7. Complement of 21° =
  8. Complement of 14° =
  9. Complement of 33° =
  10. Complement of 39° =
  11. Complement of 7° =
  12. Complement of 80° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 17
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 148° =
  2. Supplement of 13° =
  3. Supplement of 31° =
  4. Supplement of 35° =
  5. Supplement of 123° =
  6. Supplement of 82° =
  7. Supplement of 145° =
  8. Supplement of 45° =
  9. Supplement of 21° =
  10. Supplement of 34° =
  11. Supplement of 139° =
  12. Supplement of 130° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 17
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 88° and 62°. Find the third angle.
  2. A triangle has angles 74° and 65°. Find the third angle.
  3. A triangle has angles 62° and 50°. Find the third angle.
  4. A triangle has angles 41° and 33°. Find the third angle.
  5. A triangle has angles 21° and 86°. Find the third angle.
  6. A triangle has angles 32° and 45°. Find the third angle.
  7. A triangle has angles 50° and 68°. Find the third angle.
  8. A triangle has angles 32° and 100°. 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.