50 points Quadrilateral RSTU, diagonals SU and RT intersect at point V.

RSTU is a parallelogram. If m∠TUV = 78° and m∠TVU = 54°, explain how you can find the measure of ∠SRV. Show all steps of your work, and refer to any properties of triangles, parallelograms, or triangle congruency theorems as necessary to justify your response.

m∠SRV =

Step-by-step explanation:

Given: i. diagonals SU and RT intersect at point V

           ii. m∠TUV = 78° and m∠TVU = 54°

find m∠SRV.

From ΔTUV.

78° + 54° + m<UTV = (sum of angles in a triangle)

+ m<UTV =

m<UTV = -

             =

m<UTV =

But,

m∠SRV = m<UTV (alternate angle property)

So that,

m∠SRV =

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.