CBSE Class 6 Maths Lines and Angles (Class 6 NCERT New) Quiz 3

1. What is the name of an angle that measures exactly 180°?

A reflex angle B acute angle C straight angle D obtuse angle

2. If two parallel lines are cut by a transversal, what can you say about the alternate interior angles?

A The alternate interior angles are supplementary. B The alternate interior angles are complementary. C The alternate interior angles are unequal. D The alternate interior angles are equal.

3. The sum of all angles in a triangle is ______. What is the missing angle if two angles measure 60° and 80°?

A 30° B 50° C 70° D 40°

4. Which tool is used to measure the size of an angle in degrees?

A Caliper B Ruler C Compass D Protractor

5. Two angles are complementary. One angle measures 35°. What is the measure of the other angle?

A 55° B 45° C 60° D 70°

6. What type of angle measures less than 90 degrees?

A Reflex angle B Straight angle C Obtuse angle D Acute angle

7. When a transversal crosses two parallel lines, co-interior (same-side interior) angles are _______.

A Acute B Supplementary C Equal D Adjacent

8. Using a protractor, a student measures an angle as 145°. What type of angle is this?

A Acute angle B Right angle C Obtuse angle D Straight angle

9. Lines that never meet and are always the same distance apart are called _______ lines.

A perpendicular B parallel C curved D intersecting

10. Vertically opposite angles are formed when two lines intersect. If one angle is 72°, what is the measure of the angle directly opposite to it?

A 60° B 45° C 90° D 72°