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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 3

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 3
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 3
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 21° =
  2. Complement of 85° =
  3. Complement of 14° =
  4. Complement of 19° =
  5. Complement of 28° =
  6. Complement of 15° =
  7. Complement of 37° =
  8. Complement of 8° =
  9. Complement of 77° =
  10. Complement of 46° =
  11. Complement of 11° =
  12. Complement of 83° =

Supplementary angles

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

Find the supplement.

  1. Supplement of 126° =
  2. Supplement of 139° =
  3. Supplement of 148° =
  4. Supplement of 87° =
  5. Supplement of 129° =
  6. Supplement of 90° =
  7. Supplement of 56° =
  8. Supplement of 14° =
  9. Supplement of 41° =
  10. Supplement of 45° =
  11. Supplement of 48° =
  12. Supplement of 97° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 3
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 34° and 23°. Find the third angle.
  2. A triangle has angles 51° and 95°. Find the third angle.
  3. A triangle has angles 42° and 104°. Find the third angle.
  4. A triangle has angles 37° and 27°. Find the third angle.
  5. A triangle has angles 95° and 53°. Find the third angle.
  6. A triangle has angles 35° and 31°. Find the third angle.
  7. A triangle has angles 21° and 69°. Find the third angle.
  8. A triangle has angles 59° and 35°. 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.