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Quiz

Grade 5: Lines, angles and triangles

10 questions with solutions for grade 5: planes, intersecting, perpendicular and parallel lines, measuring and drawing angles with a protractor, kinds of angles, triangles by sides and angles.

Type the number or choose the right answer. When you finish, click Check answers and see the solutions.

1. Two lines that meet at a right angle are:

2. Parallel lines:

3. How many degrees is a straight angle?

4. An angle of 95° is:

5. A protractor shows the arms at 30° and 110°. How big is the angle?

6. A triangle with all three sides equal is:

7. A triangle with sides 5 cm, 5 cm and 3 cm is:

8. A triangle with angles 30°, 60° and 90° is:

9. How big is each angle of an equilateral triangle?

10. How many acute angles does every right-angled triangle have?