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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 63

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 63
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 63
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 72° =
  2. Complement of 36° =
  3. Complement of 27° =
  4. Complement of 9° =
  5. Complement of 33° =
  6. Complement of 81° =
  7. Complement of 25° =
  8. Complement of 34° =
  9. Complement of 18° =
  10. Complement of 82° =
  11. Complement of 19° =
  12. Complement of 62° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 63
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 159° =
  2. Supplement of 143° =
  3. Supplement of 168° =
  4. Supplement of 121° =
  5. Supplement of 62° =
  6. Supplement of 120° =
  7. Supplement of 126° =
  8. Supplement of 164° =
  9. Supplement of 13° =
  10. Supplement of 32° =
  11. Supplement of 142° =
  12. Supplement of 67° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 63
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 34° and 69°. Find the third angle.
  2. A triangle has angles 45° and 30°. Find the third angle.
  3. A triangle has angles 44° and 29°. Find the third angle.
  4. A triangle has angles 51° and 27°. Find the third angle.
  5. A triangle has angles 22° and 51°. Find the third angle.
  6. A triangle has angles 21° and 34°. Find the third angle.
  7. A triangle has angles 87° and 56°. Find the third angle.
  8. A triangle has angles 21° and 79°. 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.