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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 14

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 14
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 14
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 25° =
  2. Complement of 58° =
  3. Complement of 74° =
  4. Complement of 44° =
  5. Complement of 7° =
  6. Complement of 23° =
  7. Complement of 40° =
  8. Complement of 11° =
  9. Complement of 20° =
  10. Complement of 83° =
  11. Complement of 34° =
  12. Complement of 63° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 14
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 140° =
  2. Supplement of 158° =
  3. Supplement of 102° =
  4. Supplement of 169° =
  5. Supplement of 110° =
  6. Supplement of 34° =
  7. Supplement of 109° =
  8. Supplement of 170° =
  9. Supplement of 41° =
  10. Supplement of 24° =
  11. Supplement of 156° =
  12. Supplement of 72° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 14
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 86° and 28°. Find the third angle.
  2. A triangle has angles 88° and 43°. Find the third angle.
  3. A triangle has angles 34° and 55°. Find the third angle.
  4. A triangle has angles 34° and 59°. Find the third angle.
  5. A triangle has angles 27° and 79°. Find the third angle.
  6. A triangle has angles 51° and 64°. Find the third angle.
  7. A triangle has angles 66° and 80°. Find the third angle.
  8. A triangle has angles 20° and 127°. 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.