Which two statements are missing in steps 3 and 4?

∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem.

∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem.

= 2 △abc ~ △zyx by the sss similarity theorem.

= 2 △abc ~ △zyx by the sss similarity theorem.

∠B ≅ ∠Y △ABC ~ △ZYX by the SAS similarity theorem.

Step-by-step explanation:

1. units

units

units

units, then

2. and are right angles - given

3.   two right angles are always congruent.

4. by SAS similarity theorem.

SAS Similarity Theorem states that if two sides in one triangle are proportional to two sides in another triangle and the included angle in both are congruent, then the two triangles are similar.

step-by-step explanation:

consider the parallelogram shown in the attached image.

in the parallelogram hijk, the length of hk is given as,

from the properties of parallelogram we know that the opposite sides of a parallelogram are parallel to each other and are equal in measure.

therefore, the length of the side ij must be equal to the length of the side hk and that is .

hence, the expression for the length of ij confirms that hijk is a parallelogram.