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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 20

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 20
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 20
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 43° =
  2. Complement of 64° =
  3. Complement of 40° =
  4. Complement of 11° =
  5. Complement of 23° =
  6. Complement of 29° =
  7. Complement of 53° =
  8. Complement of 73° =
  9. Complement of 82° =
  10. Complement of 80° =
  11. Complement of 61° =
  12. Complement of 39° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 20
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 42° =
  2. Supplement of 160° =
  3. Supplement of 58° =
  4. Supplement of 92° =
  5. Supplement of 14° =
  6. Supplement of 112° =
  7. Supplement of 73° =
  8. Supplement of 108° =
  9. Supplement of 127° =
  10. Supplement of 113° =
  11. Supplement of 54° =
  12. Supplement of 109° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 20
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 52° and 26°. Find the third angle.
  2. A triangle has angles 26° and 22°. Find the third angle.
  3. A triangle has angles 92° and 54°. Find the third angle.
  4. A triangle has angles 40° and 46°. Find the third angle.
  5. A triangle has angles 72° and 25°. Find the third angle.
  6. A triangle has angles 74° and 48°. Find the third angle.
  7. A triangle has angles 37° and 33°. Find the third angle.
  8. A triangle has angles 84° and 48°. 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.