This set of numbers are measurements of a right triangle 18,15,4

It is not a Right Angled Triangle.

Step-by-step explanation:

A right angled triangle is a triangle whose sides satisfy the following equality.

Lets say A triangle has sides a, b and c. Where c is the longest side.

Then,

Lets substitute the values to the above equation to see whether the triangle we are given satisfies the above equality,

= =

Therefore, ≠[tex]18^{2}

So it is not a Right Angled Triangle.

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it