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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 38

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 38
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 38
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 38° =
  2. Complement of 19° =
  3. Complement of 53° =
  4. Complement of 40° =
  5. Complement of 61° =
  6. Complement of 43° =
  7. Complement of 82° =
  8. Complement of 81° =
  9. Complement of 84° =
  10. Complement of 59° =
  11. Complement of 35° =
  12. Complement of 28° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 38
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 41° =
  2. Supplement of 69° =
  3. Supplement of 96° =
  4. Supplement of 166° =
  5. Supplement of 27° =
  6. Supplement of 111° =
  7. Supplement of 34° =
  8. Supplement of 73° =
  9. Supplement of 14° =
  10. Supplement of 53° =
  11. Supplement of 149° =
  12. Supplement of 89° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 38
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 70° and 71°. Find the third angle.
  2. A triangle has angles 54° and 34°. Find the third angle.
  3. A triangle has angles 83° and 67°. Find the third angle.
  4. A triangle has angles 53° and 69°. Find the third angle.
  5. A triangle has angles 71° and 48°. Find the third angle.
  6. A triangle has angles 97° and 34°. Find the third angle.
  7. A triangle has angles 100° and 41°. Find the third angle.
  8. A triangle has angles 70° and 78°. 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.