What is the justification for the second step (reason 2)?

alternate interior angles theorem

converse of the alternate interior angles theorem

definition of a parallelogram

sas congruence postulate

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.

the equation is not included but the answer is (1.50, 2.00, 2.75)

step-by-step explanation:

to complete this square you have to rotate about the origin 270 degrees clockwise.