- AAlways isosceles
- BObtuse-angled
- CEquilateral
- DRight-angled
Step-by-Step Solution
The diagonals of a rhombus are perpendicular, so ∠AOB = 90°. △AOB is isosceles only if the rhombus is a square.
Answer: D) Right-angled
Diagonals AC and BD of rhombus ABCD meet at O. What kind of triangle is AOB?
Class 9Rectangle, Rhombus and SquareGeometry — Quadrilaterals
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Rectangle, Rhombus and Square practice questions
More Class 9 Rectangle, Rhombus and Square practice
Square ABCD has diagonal AC = 10 cm, and the diagonals meet at O. What is OB?The diagonals of a rhombus are 16 cm and 12 cm. Find the length of each side.A rhombus has side 13 cm and one diagonal 24 cm. How long is the other diagonal?What is the area of a rhombus whose diagonals are 10 cm and 24 cm?What is the length of the diagonal of a square of side 5 cm?