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

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 7
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 7
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 39° =
  2. Complement of 49° =
  3. Complement of 13° =
  4. Complement of 6° =
  5. Complement of 29° =
  6. Complement of 5° =
  7. Complement of 11° =
  8. Complement of 76° =
  9. Complement of 66° =
  10. Complement of 40° =
  11. Complement of 14° =
  12. Complement of 8° =

Supplementary angles

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

Find the supplement.

  1. Supplement of 19° =
  2. Supplement of 114° =
  3. Supplement of 127° =
  4. Supplement of 97° =
  5. Supplement of 155° =
  6. Supplement of 57° =
  7. Supplement of 76° =
  8. Supplement of 165° =
  9. Supplement of 53° =
  10. Supplement of 145° =
  11. Supplement of 68° =
  12. Supplement of 137° =

Angles of a triangle

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

Find the third angle.

  1. A triangle has angles 58° and 81°. Find the third angle.
  2. A triangle has angles 52° and 68°. Find the third angle.
  3. A triangle has angles 45° and 78°. Find the third angle.
  4. A triangle has angles 63° and 41°. Find the third angle.
  5. A triangle has angles 25° and 28°. Find the third angle.
  6. A triangle has angles 88° and 34°. Find the third angle.
  7. A triangle has angles 68° and 32°. Find the third angle.
  8. A triangle has angles 99° and 50°. 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.