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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 78

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 78
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 78
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 65° =
  2. Complement of 59° =
  3. Complement of 51° =
  4. Complement of 6° =
  5. Complement of 81° =
  6. Complement of 24° =
  7. Complement of 56° =
  8. Complement of 23° =
  9. Complement of 57° =
  10. Complement of 16° =
  11. Complement of 80° =
  12. Complement of 79° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 78
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 48° =
  2. Supplement of 59° =
  3. Supplement of 67° =
  4. Supplement of 32° =
  5. Supplement of 108° =
  6. Supplement of 36° =
  7. Supplement of 66° =
  8. Supplement of 40° =
  9. Supplement of 161° =
  10. Supplement of 73° =
  11. Supplement of 162° =
  12. Supplement of 62° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 78
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 97° and 24°. Find the third angle.
  2. A triangle has angles 24° and 115°. Find the third angle.
  3. A triangle has angles 83° and 48°. Find the third angle.
  4. A triangle has angles 63° and 46°. Find the third angle.
  5. A triangle has angles 99° and 51°. Find the third angle.
  6. A triangle has angles 37° and 88°. Find the third angle.
  7. A triangle has angles 51° and 75°. Find the third angle.
  8. A triangle has angles 44° and 101°. 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.