Which figure is formed by three non-collinear points?

Points X, Y, Z are collinear such that d (X, Y) = 17, d (Y, Z) = 8 find d(X, Z).

Sketch proper figure and write the answers of the following questions.

i. If A - B - C and /(AC) = 11, /(BC) = 6.5, then /(AB) =?

ii. If R - S - T and /(ST) = 3.7, /(RS) = 2.5, then /(RT) =?

iii. If X - Y - Z and /(XZ) = 3√7, /(XY) =√7, then /(YZ) =?

The following table shows points on a number line and their co-ordinates. Decide whether the pair of segments given below the table are congruent or not.

i. seg DE and seg AB

ii. seg BC and seg AD

iii. seg BE and seg AD

Point M is the midpoint of seg AB. If AB = 8 then find the length of AM.