Mathematics
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.
Related Questions
In a pentagon ABCDE, AB is parallel to DC and ∠A : ∠E : ∠D = 3 : 4 : 5. Find angle E.
AB, BC and CD are the three consecutive sides of a regular polygon. If ∠BAC = 15°; find,
(i) each interior angle of the polygon.
(ii) each exterior angle of the polygon.
(iii) number of sides of the polygon.
A quadrilateral ABCD is a trapezium, if :
AB = DC
AD = BC
∠A + ∠C = 180°
∠B + ∠C = 180°
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.