इस वाक्य का उचित

If in a ΔABC, the external angle bisector of angle A, meets BC when extended at a point D, BD = 5cm , BC = 3 cm then what is AB:AC ?

In the given figure CD is parallel to AB then ∠y is?

In ∆ABC , G is the centroid , AB = 5 cm, BC= 6 cm and AC = 7 cm , find GD, where D is the mid-point of BC?

Angles of a triangle are in the ratio 3 : 4 : 8. Find the measure of the largest angle of the triangle.

If G is the centroid and AD, BE, CF are three medians of ∆ABC with area 54 cm ² , then the area of ∆BGD is?

The perimeters of 2 similar triangles ∆ABC and ∆PQR are 18 cm and 12 cm respectively. If PQ= 8 cm, then AB is?

In ∆ABC , G is the centroid , AB = 20 cm, BC= 24 cm and AC = 28 cm , find GD, where D is the mid-point of BC?

∆ABC and ∆DEF are similar and their areas are respectively 121 cm² and 144 cm ² . If EF = 24 cm BC is?