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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 8

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 8
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 8
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 7° =
  2. Complement of 5° =
  3. Complement of 45° =
  4. Complement of 72° =
  5. Complement of 56° =
  6. Complement of 11° =
  7. Complement of 78° =
  8. Complement of 81° =
  9. Complement of 64° =
  10. Complement of 23° =
  11. Complement of 35° =
  12. Complement of 18° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 8
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 99° =
  2. Supplement of 24° =
  3. Supplement of 93° =
  4. Supplement of 161° =
  5. Supplement of 14° =
  6. Supplement of 127° =
  7. Supplement of 88° =
  8. Supplement of 15° =
  9. Supplement of 95° =
  10. Supplement of 136° =
  11. Supplement of 102° =
  12. Supplement of 135° =

Angles of a triangle

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

Find the third angle.

  1. A triangle has angles 48° and 20°. Find the third angle.
  2. A triangle has angles 43° and 48°. Find the third angle.
  3. A triangle has angles 31° and 35°. Find the third angle.
  4. A triangle has angles 63° and 63°. Find the third angle.
  5. A triangle has angles 80° and 69°. Find the third angle.
  6. A triangle has angles 66° and 34°. Find the third angle.
  7. A triangle has angles 75° and 35°. Find the third angle.
  8. A triangle has angles 52° and 22°. 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.