Let ABCD be a square of side length 1, and `I^(-)` a circle passing through B and C, and touching AD. The readius of `I^(-)` is -

Let ABCD be a square of side length 2 units. C2 is the circle through vertices A, B, C, D and C1 is the circle touching all the sides of the square ABCD. L is a line through A. . If P is a point on C1 and Q in another point on C2, then (PA^2+ PB^2+ PC^2+PD^2)/ (QA^2+ QB^2+ QC^2+ QD^2) is equal to (A) 0.75 (B) 1.25 (C) 1 (D) 0.5

Let ABCD be a square of side length 2 units. C_(2) is the circle through vertices A, B, C, D and C_(1) is the circle touching all the sides of the square ABCD. L is a line through A A line M through A is drawn parallel to BD. Point S moves such that its distances from the line BD and the vertex A are equal. If locus of S cuts. M at T_(2) and T_(3) and AC at T_(1) , then area of DeltaT_(1)T_(2)T_(3) is

Let ABCD be a square of side length 2 units. C2 is the circle through vertices A, B, C, D and C1 is the circle touching all the sides of the square ABCD. L is a line through A. . If P is a point on C1 and Q in another point on C2, then (PA^2+ PB^2+ PC^2+PD^2)/ (QA^2+ QB^2+ QC^2+ QD^2) is equal to

Let ABCD be a square of side length 2 units.C_(2) is the circle through vertices A,B,C,D and C_(1) is the circle touching all the sides of the square ABCD.L is a line through A.If P is a point on C_(1) and Q in another point on C_(2), then (PA^(2)+PB^(2)+PC_(2), then )/(QA^(2)+QB^(2)+QC^(2)+QD^(2)) is equal to

ABCD is a square with side length 10. A circle is drawn through A and D so that it is tangent to BC. What is the radius of circle?

Let ABCD be a square of side length 2 units. C_(2) is the fircle through the vertices A, B, C, D and C_(1) is the circle touching all the of the square ABCD. L is a lien through vertex A. A circle touches the line L and the circle C_(1) externally such that both the circles are on the same side of the line L. The locus of the centre of the circle is