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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 57

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 57
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 57
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 36° =
  2. Complement of 35° =
  3. Complement of 31° =
  4. Complement of 63° =
  5. Complement of 34° =
  6. Complement of 5° =
  7. Complement of 64° =
  8. Complement of 55° =
  9. Complement of 10° =
  10. Complement of 42° =
  11. Complement of 72° =
  12. Complement of 33° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 57
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 170° =
  2. Supplement of 160° =
  3. Supplement of 47° =
  4. Supplement of 32° =
  5. Supplement of 144° =
  6. Supplement of 142° =
  7. Supplement of 64° =
  8. Supplement of 66° =
  9. Supplement of 51° =
  10. Supplement of 86° =
  11. Supplement of 84° =
  12. Supplement of 55° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 57
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 27° and 52°. Find the third angle.
  2. A triangle has angles 22° and 93°. Find the third angle.
  3. A triangle has angles 93° and 28°. Find the third angle.
  4. A triangle has angles 27° and 79°. Find the third angle.
  5. A triangle has angles 61° and 29°. Find the third angle.
  6. A triangle has angles 86° and 49°. Find the third angle.
  7. A triangle has angles 69° and 21°. Find the third angle.
  8. A triangle has angles 45° and 67°. 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.