1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
solniwko [45]
2 years ago
13

Han wrote a proof that triangle BCD is congruent to triangle DAB. Han's proof is incomplete. Which step is missing some informat

ion? DC∥AB
Step 1: Line AB is parallel to line DC and cut by transversal DB. So angles CDB and ABD are alternate interior angles and must be congruent.
Step 2: Side DB is congruent to side BD because they're the same segment.
Step 3: Angle A is congruent to angle C because they're both right angles.
Step 4: By the Angle-Side-Angle Triangle Congruence Theorem, triangle BCD is congruent to triangle DAB .
and WHY?
Mathematics
1 answer:
Ede4ka [16]2 years ago
4 0

Answer:

The answer is below

Step-by-step explanation:

From the image, we can see that DC is parallel to AB.

Step 1:

Alternate interior angles are angles formed at the inner corners of intersection on opposite sides of transversal when two parallel lines are intersected by a transversal.

Since Line AB is parallel to line DC and cut by transversal DB. So angles CDB and ABD are alternate interior angles and must be congruent.

Step 2:

DB ≅ BD (reflexive property of congruence)

Step 3:

∠A = ∠C = 90° (right angles, given). But to prove that both triangles are congruent, the correct step 3 is:

Since, ∠A = ∠C = 90° and angles CDB and ABD are congruent. This means that the third angles in the both triangles are also congruent. Hence, angle ADB and CBD are must be congruent.

Step 4:

BD = DB, angles CDB and ABD  are congruent, angle ADB and CBD are congruent.

Therefore,  By the Angle-Side-Angle Triangle Congruence Theorem, triangle BCD is congruent to triangle DAB .

You might be interested in
Please third time asking I’ll mark brainliest
hoa [83]

Answer: A≈440.44

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
What is the solution for -3(p+7)=4-6 (p+3)​
ser-zykov [4K]
You would need to distribute the 3 on the left side and the -6 on the right side. p=7/3
8 0
3 years ago
Read 2 more answers
2.What is the value of y?<br> 60°<br> 4<br> 30<br> A 3/5<br> 415<br> B4<br> D 8
Dimas [21]

Answer:

i dont know sorry

Step-by-step explanation: cant explain it

8 0
3 years ago
Hi yes I have more questions theyre in the pics as well as here
navik [9.2K]

Answer:

1.-6

Step-by-step explanation:

I don't know how to do the second one but

BD = DC

x+8 = 3x+2

2x=-4

x=-2

-6+12

-6

5 0
3 years ago
How can you write 45.6 in words
pantera1 [17]

Answer:

forty-five and six tenths

Step-by-step explanation:

45 = forty five

.6 = six tenths

3 0
2 years ago
Read 2 more answers
Other questions:
  • Population of japan 2015
    14·1 answer
  • I have a 67.84% in my class. I have 8 more assignments that are each worth 10% and 1 exam that is worth 50%. So in total, 9 assi
    9·2 answers
  • Solve for s.<br><br><br><br> 1/2s=7/2<br><br><br><br><br> 1/7<br><br> 2/7<br><br> 3<br><br> 7
    5·2 answers
  • Helpppppppppppp on number 19 20 21 22 23
    12·2 answers
  • Rewrite the equation of a line in point-slope form to slope-intercept form: Y-3=1/2(x-8)
    6·2 answers
  • How long does it take to travel 350 miles at 70 mph
    5·2 answers
  • What is the measure of Zx?
    15·1 answer
  • What is the midpoint between (-4,4)and(-2,2)
    11·1 answer
  • The standard form of an equation of a circle with center at
    7·1 answer
  • Find the 5th term in the expansion of (a + b)º in simplest form.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!