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Labels for Geometry

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Labels for Geometry worksheet preview

Labels for Geometry

Geometry shapes and angles illustration

📐 Part 1: Identifying Lines and Angles

Remember: Parallel lines never meet (||), perpendicular lines meet at 90°, and angles are measured in degrees.

1. Which symbol represents parallel lines?

||

°

2. What type of angle measures exactly 90°?

Acute angle

Right angle

Obtuse angle

Reflex angle

3. An acute angle measures:

Less than 90°

Exactly 90°

Between 90° and 180°

More than 180°

4. Which of these describe perpendicular lines? (Tick all that apply)

They meet at right angles

They never meet

They form 90° angles

They are parallel

5. Label the angle types. Write the correct term next to each description:

a) An angle measuring 45°: _____________

b) An angle measuring 120°: _____________

c) An angle measuring 180°: _____________

d) An angle measuring 270°: _____________

🔺 Part 2: Triangles and Quadrilaterals

Key Properties: Triangles have 3 sides and angles totalling 180°. Quadrilaterals have 4 sides and angles totalling 360°.

6. A triangle with all sides equal is called:

Scalene

Isosceles

Equilateral

Right-angled

7. Which properties describe a rectangle? (Tick all that apply)

4 right angles

Opposite sides parallel

All sides equal

Opposite sides equal

8. Complete the definitions:

a) A quadrilateral with one pair of parallel sides is a _______________

b) A triangle with two equal sides is _______________

c) A quadrilateral with all sides equal and all angles 90° is a _______________

9. Name three properties of a rhombus:
10. Explain the difference between a square and a rectangle:

⭕ Part 3: Circles and Advanced Shapes

Circle Parts: Radius = centre to edge, Diameter = across the centre, Circumference = perimeter

11. The distance from the centre of a circle to its edge is called the:

Diameter

Radius

Circumference

Chord

12. If a circle has a radius of 5cm, what is its diameter?

Diameter = _______ cm

13. Label these parts of a circle:

a) A line from the centre to the edge: _______________

b) A line across the circle through the centre: _______________

c) The distance around the circle: _______________

d) A straight line joining two points on the circle: _______________

14. Draw and label a diagram showing the radius, diameter, and circumference of a circle:
15. Explain why the diameter is always twice the radius:

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