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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 80

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 80
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 80
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 44° =
  2. Complement of 36° =
  3. Complement of 10° =
  4. Complement of 26° =
  5. Complement of 72° =
  6. Complement of 58° =
  7. Complement of 24° =
  8. Complement of 9° =
  9. Complement of 41° =
  10. Complement of 54° =
  11. Complement of 42° =
  12. Complement of 49° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 80
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 58° =
  2. Supplement of 18° =
  3. Supplement of 125° =
  4. Supplement of 71° =
  5. Supplement of 66° =
  6. Supplement of 164° =
  7. Supplement of 40° =
  8. Supplement of 152° =
  9. Supplement of 136° =
  10. Supplement of 79° =
  11. Supplement of 99° =
  12. Supplement of 27° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 80
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 62° and 88°. Find the third angle.
  2. A triangle has angles 53° and 67°. Find the third angle.
  3. A triangle has angles 58° and 75°. Find the third angle.
  4. A triangle has angles 33° and 55°. Find the third angle.
  5. A triangle has angles 64° and 57°. Find the third angle.
  6. A triangle has angles 38° and 45°. Find the third angle.
  7. A triangle has angles 93° and 44°. Find the third angle.
  8. A triangle has angles 91° and 38°. 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.