10 questions · Form 1 Mathematics Bab 9: Basic Polygons
10 questions · plays in fullscreen
Prefer reading to quizzing? All 10 questions are listed below with the answer and explanation under each one.
1. Which statement is TRUE for a parallelogram?
Answer: C
In a parallelogram, opposite sides are parallel and equal, and opposite angles are equal.
2. A quadrilateral has two pairs of equal adjacent sides and diagonals that cut at 90°. What shape is it?
Answer: C
A kite has adjacent sides equal and perpendicular diagonals.
3. How many lines of symmetry does a regular rectangle have?
Answer: C
A non-square rectangle has exactly 2 lines of symmetry (connecting the midpoints of opposite sides).
4. In a parallelogram ABCD, angle A = 110°. Find the measure of angle B (adjacent to A on a parallel side).
Answer: B
Interior angles between parallel lines sum to 180°. Angle B = 180° - 110° = 70°.
5. What is the sum of interior angles of any quadrilateral?
Answer: C
Every quadrilateral can be divided into two triangles, making the sum of its interior angles 2 × 180° = 360°.
6. If a triangle has angle measurements of 35°, 55°, and 90°, what type of triangle is it?
Answer: C
Because one interior angle measures exactly 90°, it is classified as a right-angled triangle.
7. How many diagonals can be drawn in a pentagon?
Answer: A
For a pentagon, n = 5. Diagonals = 55 - 32 = 522 = 5.
8. Which polygon has 7 sides?
Answer: B
A 7-sided polygon is called a heptagon.
9. Which quadrilateral has ONLY ONE pair of parallel sides?
Answer: C
By definition, a trapezium is a quadrilateral with only one pair of parallel sides.
10. Three interior angles of a quadrilateral are 85°, 110°, and 95°. Calculate the fourth angle.
Answer: B
Sum of quadrilateral angles = 360°. Fourth angle = 360° - (85° + 110° + 95°) = 360° - 290° = 70°.