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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 11

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 11
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 11
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 41° =
  2. Complement of 21° =
  3. Complement of 58° =
  4. Complement of 14° =
  5. Complement of 68° =
  6. Complement of 22° =
  7. Complement of 79° =
  8. Complement of 78° =
  9. Complement of 12° =
  10. Complement of 63° =
  11. Complement of 30° =
  12. Complement of 66° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 11
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 113° =
  2. Supplement of 91° =
  3. Supplement of 66° =
  4. Supplement of 140° =
  5. Supplement of 122° =
  6. Supplement of 34° =
  7. Supplement of 121° =
  8. Supplement of 40° =
  9. Supplement of 39° =
  10. Supplement of 125° =
  11. Supplement of 109° =
  12. Supplement of 28° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 11
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 73° and 52°. Find the third angle.
  2. A triangle has angles 49° and 41°. Find the third angle.
  3. A triangle has angles 36° and 82°. Find the third angle.
  4. A triangle has angles 74° and 60°. Find the third angle.
  5. A triangle has angles 57° and 42°. Find the third angle.
  6. A triangle has angles 44° and 73°. Find the third angle.
  7. A triangle has angles 89° and 33°. Find the third angle.
  8. A triangle has angles 90° and 26°. 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.