1 Answer

Mohammad Olfatmiri · Answer 1 · 2022-08-16T13:26:34+0000

Answer:

CB = 5,
$m\angle{BDA} = 23^\circ$

Explanation:

Assuming that the marks next to angle D mean that
$\angle{BDA} \cong \angle{BDC}$ , then there is enough information to conclude that the two right triangles are congruent (HA theorem--hypotenuse/angle).

Then all the corresponding parts of the two triangles are congruent, including segments BA and BC, making them the same length.

4x + 1 = 9x - 4

Solving for x,

1 = 5x - 4

5 = 5x

1 = x

Pluggint x = 1 into the two expressions reveals that the length of segment CB is 5.

The two small angles at D are congruent, so
$m\angle{BDA}=23^\circ$ .

0 Comments

Please log in or register to add a comment.

Please log in or register to answer this question.

1 Answer

0 Comments

Please log in or register to add a comment.

Other Questions