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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 48

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 48
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 48
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 51° =
  2. Complement of 20° =
  3. Complement of 82° =
  4. Complement of 24° =
  5. Complement of 45° =
  6. Complement of 62° =
  7. Complement of 85° =
  8. Complement of 25° =
  9. Complement of 73° =
  10. Complement of 80° =
  11. Complement of 74° =
  12. Complement of 37° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 48
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 38° =
  2. Supplement of 51° =
  3. Supplement of 93° =
  4. Supplement of 168° =
  5. Supplement of 56° =
  6. Supplement of 61° =
  7. Supplement of 78° =
  8. Supplement of 84° =
  9. Supplement of 97° =
  10. Supplement of 83° =
  11. Supplement of 141° =
  12. Supplement of 24° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 48
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 53° and 94°. Find the third angle.
  2. A triangle has angles 44° and 46°. Find the third angle.
  3. A triangle has angles 61° and 88°. Find the third angle.
  4. A triangle has angles 58° and 26°. Find the third angle.
  5. A triangle has angles 49° and 33°. Find the third angle.
  6. A triangle has angles 94° and 42°. Find the third angle.
  7. A triangle has angles 51° and 99°. 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.