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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 10

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 10
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 10
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 9° =
  2. Complement of 7° =
  3. Complement of 54° =
  4. Complement of 6° =
  5. Complement of 60° =
  6. Complement of 51° =
  7. Complement of 17° =
  8. Complement of 83° =
  9. Complement of 10° =
  10. Complement of 22° =
  11. Complement of 76° =
  12. Complement of 45° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 10
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 28° =
  2. Supplement of 77° =
  3. Supplement of 143° =
  4. Supplement of 131° =
  5. Supplement of 104° =
  6. Supplement of 92° =
  7. Supplement of 47° =
  8. Supplement of 113° =
  9. Supplement of 158° =
  10. Supplement of 127° =
  11. Supplement of 26° =
  12. Supplement of 41° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 10
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 80° and 47°. Find the third angle.
  2. A triangle has angles 36° and 81°. Find the third angle.
  3. A triangle has angles 35° and 37°. Find the third angle.
  4. A triangle has angles 71° and 30°. Find the third angle.
  5. A triangle has angles 40° and 109°. Find the third angle.
  6. A triangle has angles 55° and 92°. Find the third angle.
  7. A triangle has angles 25° and 94°. Find the third angle.
  8. A triangle has angles 30° and 51°. 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.