The picture shows the Alamillo Bridge in Seville, Spain. In the
picture, mZ1 = 58°. Find the
measure of the supplement of
21.

122°

Step-by-step explanation:

Supplementary angles add to 180 degrees.

We know that ∠1 measures 58 degrees. We want to find the measure of the supplement, which we can call x. Since they are supplementary, they should add to 180 degrees.

∠1 + ∠x = 180

58 + ∠x= 180

We are trying to find the supplement, also known as x. Therefore, we must isolate x.

58 is being added to x. The inverse of addition is subtraction. Subtract 58 from both sides of the equation.

58-58+∠x=180-58

∠x=122

supplement= 122°

The supplement of angle 1 is 122 degrees.

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