Mathematics
If the diagonals of a square ABCD intersect each other at point O, the triangle OAB is :
an equilateral triangle.
a right-angled but not an isosceles triangle.
an isosceles but not a right-angled triangle.
an isosceles right-angled triangle.
Related Questions
The ratio between an exterior angle and an interior angle of a regular polygon is 2 : 3. Find the number of sides in the polygon.
A quadrilateral ABCD is a trapezium, if :
AB = DC
AD = BC
∠A + ∠C = 180°
∠B + ∠C = 180°
A quadrilateral in which the diagonals are equal and bisect each other at right angles is a :
rectangle which is not a square.
rhombus which is not a square.
square.
kite which is not a square.
Which of the following is not true for a parallelogram :
opposite sides are equal
opposite angles are equal
opposite angles are bisected by the diagonals
diagonals bisect each other