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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 6

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 6
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 6
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 30° =
  2. Complement of 28° =
  3. Complement of 38° =
  4. Complement of 21° =
  5. Complement of 13° =
  6. Complement of 65° =
  7. Complement of 37° =
  8. Complement of 46° =
  9. Complement of 83° =
  10. Complement of 85° =
  11. Complement of 57° =
  12. Complement of 5° =

Supplementary angles

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

Find the supplement.

  1. Supplement of 14° =
  2. Supplement of 144° =
  3. Supplement of 27° =
  4. Supplement of 75° =
  5. Supplement of 113° =
  6. Supplement of 154° =
  7. Supplement of 164° =
  8. Supplement of 36° =
  9. Supplement of 120° =
  10. Supplement of 156° =
  11. Supplement of 26° =
  12. Supplement of 109° =

Angles of a triangle

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

Find the third angle.

  1. A triangle has angles 72° and 78°. Find the third angle.
  2. A triangle has angles 46° and 99°. Find the third angle.
  3. A triangle has angles 58° and 23°. Find the third angle.
  4. A triangle has angles 47° and 49°. Find the third angle.
  5. A triangle has angles 81° and 65°. Find the third angle.
  6. A triangle has angles 74° and 25°. Find the third angle.
  7. A triangle has angles 31° and 93°. Find the third angle.
  8. A triangle has angles 62° and 30°. 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.