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
Fantom [35]
1 year ago
6

Help me solve this two column proof!

Mathematics
1 answer:
cestrela7 [59]1 year ago
3 0

The two column proof is written as follows

Statement                                                           Reason

AD ≅ BD ≅ CD                                         given

ΔADB and ΔCDB are isosceles             Base angles are equal

< A =  < C = < ABD = < CBD = x              Definition of isosceles triangle.

< ABC =  < ABD + < CBD                         Adjacent angles

< ABC = x + x = 2x                                   Substitution property of equality

< ABC + < A + < C = 180                          Sum of angels of a triangle

2x + x + x = 180                                       Substitution property of equality

4x = 180                                                   Addition property of equality

x = 45 degrees                                        Division property of equality

< ABC = 2x = 2 * 45                                Substitution property of equality

< ABC = 90                                              Definition of right triangle

<h3>What is a right triangle?</h3>

A triangle is said to be a right triangle if one of the angles is 90 degrees. Right angles are angles that are 90 degrees.

The proof required to proof that < B is 90

With the isosceles triangle giving and the equal sides the equation is written as

4x = 180

x = 45

< B has 2x (< ABD + < CBD) these are adjacent angles

< B = 2 * 45

< B = 90

Learn more on proof  involving angles here:

brainly.com/question/29189788

#SPJ1

You might be interested in
Which is larger 143.0 millimeters or 143.0 decimeters?
Natali5045456 [20]
1 <span>millimeter = 10⁻³ m
1 </span><span>decimeter = 10⁻¹ m
So,</span>decimeters are larger units, and 143.0 decimeters > <span>143.0 millimeters .</span>
6 0
3 years ago
Write a word phrase for c – 9.1. 9.1 less than a number a number subtracted from 9.1 a number plus 9.1 9.1 minus a number
xxTIMURxx [149]
<span>9.1 minus a number is correct</span>
7 0
3 years ago
Read 2 more answers
the front area of a pension house with dimension of 12m by 3m will be covered by bermuda grass.If the bermuda grass with dimensi
stich3 [128]

Answer:

yes

Step-by-step explanation:

and yes

4 0
2 years ago
-3(X - 8) - (x + 5) - 23
rjkz [21]

Answer: −

3

X

−

x

−

4

Step-by-step explanation:

7 0
3 years ago
12 meters in 28 seconds as a unit rate
blondinia [14]
You divide and get 3/7 meters per second
6 0
3 years ago
Other questions:
  • WILL GIVE BRAINLIEST
    11·2 answers
  • Eli's family starts with 2 whole pizzas. they eat 1 3/8 pizzas. how much pizza do they have left?
    15·1 answer
  • A survey was taken of students in math classes to find out how many hours per day students spend on social media. The survey res
    9·1 answer
  • How many solutions does the equation 4x + 8 = −2 − 2 + 5x have?
    8·2 answers
  • WILL MARK YOU BRAINLIEST!!!!!!
    12·1 answer
  • Chen's pocket holds 10 coins: 3 quarters, 4 dimes, 1 nickle, and 2 pennies. What are the chances that he first randomly pulls ou
    7·1 answer
  • What is the difference of the fractions? 7/8 - 5/8
    13·1 answer
  • Find the slope of the line.. pls help me ill give brainliest. Its timed.
    14·1 answer
  • What is -3/5 multiplied by 4/7?<br> Pls show answer with step by step answers explained pls
    14·2 answers
  • Add or subtract. use the least common multiple as the denominator what is 5/8-5/25
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!