In a triangle, if three altitudes are equal, then the triangle is
equilateral
right
isosceles
obtuse
If G is the centroid of Δ ABC and Δ ABC = 48 cm2, then the area of Δ BGC is
8 cm2
16 cm2
24 cm2
32 cm2
Taking any three of the line segments out of segments of length 2 cm, 3 cm, 5 cm and 6 cm, the number of triangles that can be formed is
1
4
3
2
The radius of the circumcircle of a right angled triangle is 15 cm and the radius of its inscribed circle is 6 cm. Find the sides of the triangle.
30, 24, 25
24, 36, 30
30, 40, 41
18, 24, 30
In a ΔABC, ∠A : ∠B : ∠C = 2 : 3 : 4, A line CD is drawn || to AB, then ∠ACD is
80°
20°
40°
60°
ABC is an isosceles triangle with AB = AC. A circle through B touching AC at the middle point intersects AB at P. Then, AP : BP is
3 : 5
1 : 4
4 : 1
2 : 3
If the length of the sides of a triangle are in the ratio 4 : 5 : 6 and the inradius of the triangle is 3 cm, then the altitude of the triangle corresponding to the largest side as base is
10 cm
8 cm
7.5 cm
6 cm
C.
7.5 cm
Let the sides be 4x, 5x, 6x respectively. As largest side is the base, therefore corresponding altitude (h) is given by,
Now,
In a ΔABC, the side BC is extended upto D. Such that CD = AC, if ∠BAD = 109° and ∠ACb = 72°, then the value of ∠BAC is
35°
60°
40°
45°
ABC is a triangle. The bisectors of the internal angle ∠B and external angle ∠C intersect at D. If ∠BDC = 50° then ∠A is
100°
90°
120°
60°