Figure ABCD is a trapezoid. Which sequence of transformations will carry figure ABCD onto itself?

a reflection across side b followed by a 180° rotation about point A

a reflection across side b followed by a 360° rotation about point A

a reflection across the line joining the midpoints of DA and CB followed by a 180° rotation about the midpoint of DA

a reflection across the line joining the midpoints of DA and CB followed by a second reflection about the line joining the midpoints of DA and CB

26

step-by-step explanation:

the correct answer is 1: 2

step-by-step explanation:

hope this your welcome : )

step-by-step explanation:

left be aligning the decimal points is required to not required see the number of digits to the right

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus