Two circles touch externally at a point P. From a point T on a common tangent PT, tangent segments TA and TB are drawn to the two circles. Then TA =
PB
TB
OB
2 TB
The areas of two similar triangles are 81 cm2 and 49 cm2 respectively. If the altitude of the first triangle is 6.3 cm then the corresponding altitude of the other is
4.9 cm
9.4 cm
49 cm
9.2 cm
A tangent PT at a point T of a circle of radius 8 cm meets a line through the centre O at a point P so that OP = 17 cm. Then, the length of PT is
12 cm
8.5 cm
15 cm
10 cm
The length of the diagonal of a rectangle is 10 cm. The area of its circumscribed circle is
10 π cm2
25 π cm2
100 π cm2
50 π cm2
From a point P, the length of the tangent to a circle is 15 cm and distance of P from the centre of the circle is 17 cm. Then the radius of the circle is
6 cm
8 cm
4 cm
If two triangles are similar such that ratio of their areas is 25 : 361. THen ratio of corresponding medians is
5 : 19
1 : 6
5 : 29
15 : 19
In Δ ABC and Δ DEF, ∠ B = ∠ E, ∠ F = ∠ C and AB = 2 DE, then two triangles are
Equal
Equivalent
Similar
None of these
The areas of two similar triangle are 121 cm2 and 64 cm2 respectively. If the median of the first triangle is 12.1 cm, the corresponding median of the other is
9.9 cm
10.2 cm
8.8 cm
6.6 cm
16 : 10
1 : 16
1 : 4
4 : 10
Which of the following statement is false?
All congruent figures are similar
All similar figures are congruent
Equivalent triangles are similar
All the rectangles are not similar
