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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 47

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 47
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 47
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 18° =
  2. Complement of 77° =
  3. Complement of 83° =
  4. Complement of 64° =
  5. Complement of 26° =
  6. Complement of 16° =
  7. Complement of 20° =
  8. Complement of 57° =
  9. Complement of 58° =
  10. Complement of 80° =
  11. Complement of 73° =
  12. Complement of 70° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 47
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 160° =
  2. Supplement of 112° =
  3. Supplement of 59° =
  4. Supplement of 129° =
  5. Supplement of 97° =
  6. Supplement of 82° =
  7. Supplement of 132° =
  8. Supplement of 86° =
  9. Supplement of 54° =
  10. Supplement of 37° =
  11. Supplement of 170° =
  12. Supplement of 93° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 47
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 76° and 67°. Find the third angle.
  2. A triangle has angles 53° and 50°. Find the third angle.
  3. A triangle has angles 97° and 51°. Find the third angle.
  4. A triangle has angles 85° and 59°. Find the third angle.
  5. A triangle has angles 26° and 83°. Find the third angle.
  6. A triangle has angles 92° and 55°. Find the third angle.
  7. A triangle has angles 84° and 31°. Find the third angle.
  8. A triangle has angles 36° and 102°. 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.