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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 5

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 5
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 5
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 68° =
  2. Complement of 21° =
  3. Complement of 28° =
  4. Complement of 61° =
  5. Complement of 49° =
  6. Complement of 53° =
  7. Complement of 32° =
  8. Complement of 33° =
  9. Complement of 52° =
  10. Complement of 57° =
  11. Complement of 65° =
  12. Complement of 48° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 5
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 130° =
  2. Supplement of 73° =
  3. Supplement of 108° =
  4. Supplement of 137° =
  5. Supplement of 133° =
  6. Supplement of 55° =
  7. Supplement of 126° =
  8. Supplement of 41° =
  9. Supplement of 123° =
  10. Supplement of 20° =
  11. Supplement of 111° =
  12. Supplement of 21° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 5
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 58° and 71°. Find the third angle.
  2. A triangle has angles 65° and 20°. Find the third angle.
  3. A triangle has angles 93° and 46°. Find the third angle.
  4. A triangle has angles 49° and 87°. Find the third angle.
  5. A triangle has angles 97° and 26°. Find the third angle.
  6. A triangle has angles 54° and 77°. Find the third angle.
  7. A triangle has angles 36° and 102°. Find the third angle.
  8. A triangle has angles 80° and 33°. 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.