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
natka813 [3]
3 years ago
11

Given triangle abc which of the following must be true

Mathematics
2 answers:
alexgriva [62]3 years ago
7 0
<h2>Answer:</h2>

The correct statements are:

                     I, II , III

<h2>Step-by-step explanation:</h2>
  • In the given triangle i.e. ΔABC we have:

length of side AB= length of side AC= 20 units

          Hence, we have:

                  ∠B≅∠C

( since the angle opposite to equal side are equal )

  • Also, we see that the line AD is perpendicular to side BC.

         Hence, we have:

                ∠BDA≅∠CDA

      ( Since both the angles have equal measure )

  • Hence, as two angles of a triangle are congruent to each other so the third angle will also be congruent.

( Since m∠B=m∠C

and m∠ADB=m∠ADC

⇒  m∠B+m∠ADB=m∠C+m∠ADC--------------(1)

By triangle sum theorem we have:

   In ΔADB

m∠B+m∠ADB+m∠DAB=180°

⇒    m∠DAB=180°-(m∠B+m∠ADB)

and in ΔADC by triangle sum theorem we have:

m∠DAC=180°-(m∠C+m∠ADC)

Hence, by equation (1) we have:

       m∠DAB=m∠CAD )

SVETLANKA909090 [29]3 years ago
4 0
I, II, and III are all correct.
You might be interested in
If a:b=5:6and b:c=3:8 find a:b:c?
mr_godi [17]

Answer:

(a x b ) : (b x b ) : (b x c)

5x3 : 6x3 : 6 x 8

Step-by-step explanation:

15:18:48

5 0
2 years ago
How to use words to describe the two ways you can think about 8 X 5 = 40 as a comparison?
stiks02 [169]

Answer:

opo

Step-by-step explanation:

tulog kana po, goodnight

7 0
2 years ago
Read 2 more answers
Which of the tables represents a function? Help please i’ll mark brainliest
Helga [31]

Answer:

Table B

Step-by-step explanation:

If you see any number in the input being used more than once, it is not a function. If all numbers of the input are different, it is a function.

Only Table B is a function since all input numbers are different.

5 0
3 years ago
What's the simplified form of 2x + 3 – X + 5?<br> A.X-2<br> B.X-8<br> C. x+8<br> D. 3x + 8
allochka39001 [22]

Answer:

C

Step-by-step explanation:

Group like terms

= 2x - x +3 +5

Add the similar 'elements'

= x + 3 + 5

Add the numbers

3 + 5 = 8 + x

= x+8

8 0
3 years ago
What is the probability of getting two heads and 1 tail
aleksklad [387]
There is a 1/3 chance. Because there are 3 coins
8 0
3 years ago
Read 2 more answers
Other questions:
  • HELP ASAP!!!!!!!!!!
    15·1 answer
  • Help math problem please
    11·1 answer
  • How do I solve for question number 8
    10·1 answer
  • What is -23-x-x+16-2
    10·2 answers
  • How do I solve this?
    15·2 answers
  • Which graph represents y=cos (2x-pi)+5 ?
    10·1 answer
  • Here's a graph of a linear function. Write the equation that describes that function. (If blurry zoom in.)
    6·1 answer
  • Josh had 1/2 a pound of chocolate to share between him and his 3 friends. How much chocolate does each friend get? (Leave your a
    13·1 answer
  • A turkey was cooked at 400° F in the oven for 3 hours. The internal temperature rose from 30° F to 156° F. What was the average
    14·1 answer
  • Plz help me answer fast
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!