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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 52

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 52
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 52
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 50° =
  2. Complement of 22° =
  3. Complement of 75° =
  4. Complement of 44° =
  5. Complement of 74° =
  6. Complement of 55° =
  7. Complement of 42° =
  8. Complement of 32° =
  9. Complement of 28° =
  10. Complement of 80° =
  11. Complement of 20° =
  12. Complement of 41° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 52
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 146° =
  2. Supplement of 65° =
  3. Supplement of 97° =
  4. Supplement of 42° =
  5. Supplement of 57° =
  6. Supplement of 64° =
  7. Supplement of 43° =
  8. Supplement of 142° =
  9. Supplement of 61° =
  10. Supplement of 51° =
  11. Supplement of 81° =
  12. Supplement of 165° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 52
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 57° and 64°. Find the third angle.
  2. A triangle has angles 37° and 21°. Find the third angle.
  3. A triangle has angles 90° and 39°. Find the third angle.
  4. A triangle has angles 40° and 92°. Find the third angle.
  5. A triangle has angles 92° and 48°. Find the third angle.
  6. A triangle has angles 60° and 50°. Find the third angle.
  7. A triangle has angles 27° and 81°. Find the third angle.
  8. A triangle has angles 75° and 69°. 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.