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Natalija [7]
3 years ago
9

Can someone please explain 7 and 8 to me? I really don’t get it that well. On 7, why are they congruent? Why is it false for 8?

Mathematics
2 answers:
EleoNora [17]3 years ago
8 0

Answer:

Step-by-step explanation:

In ΔABD and ΔBDC

  BD = BD  {common to both trianles}

 ∠ABD =∠DBC    {BD is bisects ∠B}

∠BAD =   ∠BCD   {given in the sum, both are 90}

ΔABD and ΔBDC are congruent triangles.

7) so, AD conguent CD

8) False.

AB congruent CB because ΔABD and ΔBDC are congruent as CPCT rule.

AB congruent CB not because of BD is bisector of  ∠B

Crazy boy [7]3 years ago
5 0

Answer: Look below :)

Step-by-step explanation:

7. <u>AD</u> and <u>CD</u> are congruent.  Each of the triangles are the same in length and shape (both are right triangles). They are the same but are mirrored over the line <u>BD.</u>

8.  I have no idea. Sorry.

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to solve you subtract 5 from each side giving you 19=X+Y now you divide the 19 by 2 so you figure out the base integers giving you 9.5

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so your integers are 9.5 and 14.5

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