Geometry MCQs with Answers – Parallel Lines, Angles, Triangles, and Polygons

Geometry MCQs with Answers – Parallel Lines, Angles, Triangles, and Polygons

1. If two lines are parallel to the same line, then they are _____.
   (a) Perpendicular
   (b) Parallel
   (c) Concurrent
   (d) Intersecting

2. If two lines intersect each other, then they have exactly ____ common point(s).
(a) One
(b) Two
(c) Infinite
(d) None

3. Lines which do not meet even when extended indefinitely are called _____.
(a) Intersecting lines
(b) Perpendicular lines
(c) Parallel lines
(d) Concurrent lines

4. If two angles are complementary, then their sum is _____.
(a) 60°
(b) 90°
(c) 120°
(d) 180°

5. If two angles are supplementary, then their sum is _____.
(a) 90°
(b) 120°
(c) 150°
(d) 180°

6. The angle between two perpendicular lines is always _____.
(a) 45°
(b) 60°
(c) 90°
(d) 180°

7. If a transversal cuts two parallel lines, then alternate interior angles are _____.
(a) Equal
(b) Supplementary
(c) Complementary
(d) Unequal

8. If a transversal cuts two parallel lines, then corresponding angles are _____.
(a) Unequal
(b) Complementary
(c) Equal
(d) Right angles

9. The sum of the three angles of a triangle is always _____.
(a) 90°
(b) 120°
(c) 180°
(d) 360°

10. An angle greater than 90° but less than 180° is called a ____ angle.
(a) Right
(b) Acute
(c) Obtuse
(d) Reflex

11. An angle equal to 90° is called a ____ angle.
(a) Right
(b) Acute
(c) Obtuse
(d) Reflex

12. An angle less than 90° is called a ____ angle.
(a) Right
(b) Acute
(c) Obtuse
(d) Reflex

13. An angle greater than 180° but less than 360° is called a ____ angle.
(a) Acute
(b) Obtuse
(c) Reflex
(d) Right

14. Two angles that add up to 180° are called ____ angles.
(a) Complementary
(b) Supplementary
(c) Right
(d) Adjacent

15. Two lines in the same plane that intersect at right angles are called ____ lines.
(a) Parallel
(b) Concurrent
(c) Perpendicular
(d) Intersecting

16. The point where three or more lines meet is called the point of _____.
(a) Intersection
(b) Concurrency
(c) Parallelism
(d) Bisection

17. A triangle with all three sides equal is called a ____ triangle.
(a) Scalene
(b) Isosceles
(c) Equilateral
(d) Right-angled

18. A triangle with two sides equal is called a ____ triangle.
(a) Scalene
(b) Isosceles
(c) Equilateral
(d) Obtuse

19. A polygon with four equal sides and four right angles is a _____.
(a) Rectangle
(b) Rhombus
(c) Square
(d) Parallelogram

20. In a rectangle, opposite sides are _____.
(a) Unequal
(b) Parallel and equal
(c) Only parallel
(d) Only equal

21. In a square, all sides are _____.
(a) Unequal
(b) Equal
(c) Parallel
(d) Different

22. The diagonals of a rectangle are _____.
(a) Unequal
(b) Equal and bisect each other
(c) Equal and perpendicular
(d) Unequal and bisect each other

23. The diagonals of a square are _____.
(a) Equal and bisect each other at 90°
(b) Unequal and bisect each other
(c) Equal but not perpendicular
(d) Unequal and perpendicular

24. A polygon with 5 sides is called a _____.
(a) Pentagon
(b) Hexagon
(c) Octagon
(d) Heptagon

25. A polygon with 6 sides is called a _____.
(a) Pentagon
(b) Hexagon
(c) Octagon
(d) Heptagon