Help with a few questions?

Question

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Answer 1

11)

Triangle are congruent.

Observe the triangles,

The two triangle sides are equals.

Since,

Find

The value of

12)

Triangle are congruent.

Observe the triangles,

The two triangle sides are equals.

Since,

Find

The value of

Answer 2

13)

Triangle are congruent.

Observe the triangles,

The two triangle sides are equals.

Since,

The equations are

Find

The value of

14)

Triangle are congruent.

Observe the triangles,

The two triangle angle are equals.

Since,

Find

The value of

Answer 3

16)

Triangle are similar.

Observe the triangles,

Since,

The equations are 

Find

The value of

Answer 4

15)

Triangle are similar.

Observe the triangles,

Since,

The equations are 

Find

The value of