Class VII The triangle whose lengths of sides are 7 cm, 24 cm, 25 cm is a __________. Acute-angled triangle None of these Obtuse-angled triangle Right-angled triangle A 15 m long ladder reached a window 12 m high from the ground on placing it against a wall at a distance a. Find the distance of the foot of the ladder from the wall. None of these 12 m 9 m 10 m A triangle in which all the three sides are of different length is called Equilateral triangle Isosceles triangle Scalene triangle None of these The triangle whose lengths of sides are 8 cm, 15 cm, 17 cm is a __________. Acute-angled triangle None of these Right-angled triangle Obtuse-angled triangle In a triangle, there are ____ sides and ____ angles 4, 4 3, 4 4, 3 3, 3 Do you really want to submit this quiz? Cancel Submit Quiz