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Tutors Answer Your Questions about Geometry proofs (FREE)
Question 98308: Hi, Could you help me with this proof?
1.
2.
3. AC=DE
4.GH=GH
5. AC + GH = DE + GH
I need to know the reason for number five.
these are the choices:
A. Symmetric Property of Equality
B. Substitution Property of Equality
C. Addition Property of Equality
D. Division Property of Equality
I am really confused, as my tutor is out of town. if you could tell me which one and why it would really help. thanks in advance.
Click here to see answer by scott8148(3382)   |
Question 98310: NEED HELP WITH PROOF:
A PROOF HAS THE FOLLOWING STEPS:
1.
2.
3. MEASURE OF ANGLE K + MEASURE OF ANGLE J = MEASURE OF ANGLE P + MEASURE OF ANGLE 1.
4. MEASURE OF ANGLE A = MEASURE OF ANGLE K + MEASURE OF ANGLE J
5. MEASURE OF ANGLE F = MEASURE OF ANGLE P + MEASURE OF ANGLE 1.
6. MEASURE OF ANGLE A = MEASURE OF ANGLE F.
THE QUESTION ASKS WHAT THE REASON IS FOR STEP 6?
A. SYMMETRIC PROPERTY OF EQUALITY
B. SUBSTITUTION PROPERTY OF EQUALITY
C. ANGLE ADDITION POSTULATE
D. REFLEXIVE PROPERTY OF EQUALITY
THANKS IN ADVANCE!!! PLEASE GIVE ME THE ANSWER AND WHY IT IS THE ANSWER!!!!
:)
Click here to see answer by mathslover(126)  |
Question 100685: please help me with this problem:
angle w is equal to angle z where the measure of angle w is (11x-8) and the measure of angle z is (9x+4) and they are both acute angles
this problem is from chapter 6, lesson 2.6 and lesson 2.7 for geometry
Click here to see answer by elima(1433) |
Question 100972: this a worksheet i do NOT understand. but if i know how to do at least one problem, i should be able to get them all. the directions are "Complete the argument, giving a reason for each step"
10. Given: (segment) JK is congruent to (segment) SH and (segment) SH is congruent to (segment) MN
Prove: (segment) JK is congruent to (segment) MN.
statement | reason
JK is congruent to SH ?
SH is congruent to MN ?
JK is congruent to MN segment addition postulate
i thought that the first two were given, but on the other ones it has given typed in, i found out the 3rd reason because our teacher gave us that one in class. I really don't know what to do, except we answer with a proof, properties, and/or postulates, and I appreciate your help.
Click here to see answer by timmy1729(23) |
Question 103737: Given: x is the midpoint of seg. WY (straight line in order of W,X,Y,Z. all seg.look congruent.
Prove: XY+YZ=XZ
(I just started Geometry and my eighth grade teacher is really mean please help!)
Click here to see answer by elima(1433) |
Question 104814This question is from textbook geometry
: I am having trouble completeing my own proof. I am ok when the teacher is doing it with us. I am hoping that you can help me with it. The question I am going to ask you is out of a worksheet. Thank you
given: segment AD is parallel to segment BC, segment AB is parallel to segment CD
prove: angle B is congruent to angle DThis question is from textbook geometry
Click here to see answer by edjones(3292)  |
Question 105263: How do I set up this proof, figure out a diagram, and givens?:
The line drawn from the vertex angle of an isosceles triangle through the point of intersection of the medians to the legs is perpindicular to the base.
Click here to see answer by mbotros(2) |
Question 106621: Is anyone familar with Flow Proofs in geometry? I am trying to assit my daughter in H.S. geometry but, while I am pretty good at math, they didn't have Flow Proofs 30 years ago. What I would really like is the URL to a primer on Geometric Flow Proofs so that I can learn about them and help explain them to my daughter.
Click here to see answer by stanbon(26259) |
Question 111607: The distance traveled by a ball roling down a ramp is given by the equation s(t)=5tsquared, where t is the time after the ball is released, in seconds, and s(t) is mearsured n feet. What is the average speed of the ball for the time t=3 through t=4.5? Express your answer as a decimal to the nearest tenth.
I came up with s=15 for the 3 second time and s=22.5 for the 4.5 time. I plugged in the number to get 45 seconds and 101.25 seconds and averaged the two. I got an average of 73.125 or 73.1 feet per second. Does that look right?
I don't have the ISBN number for the Math Counts book; the teacher does.
Click here to see answer by Edwin McCravy(2920) |
Question 115057This question is from textbook Lifepac math
: STATEMENT REASON
12-x=20-5x : Given
12+4x=20 : ____________________
4x=8 : ____________________
x=2 : ____________________
Supply the reasons in the proofs. Really don't understand the WHY in determining subtr,divis,or additi of equality.This question is from textbook Lifepac math
Click here to see answer by stanbon(26259) |
Question 115274: I do not understand how inscribed angles in a circle works. My teacher asks me questions like to find angles of the stuff in a circle, then i get confused. she says that some are congruent and such, it is difficult for me. We use conjectures from the book Discovering Geometry, An inductive approach, and we are in the circle section. We are supposed to learn by our selfs using these conjecture. Please help
Click here to see answer by elima(1433) |
Question 117986: Write a 2- coloumn proof.
Given AB is congruent to AC
Prove- measure of angle B is greater than angle of measure of angle D.
The picture is of a large triangle ADB and there is a line going from point a to point C inbetween segmetn BD.
Click here to see answer by bucky(1732) |
Question 117985: I need to write an indirect proof for this problem:
Given- AB is not equal to DE & AC is congruent to CD
Prove measure of angle B is not equal to measure of angle e
there is a picture of two triangles facing each other and sharing one point- the tops of each triangle and the letters read from left to right- top left point A, middle point where both triangles meet point C, then next top point is point D, lower right point E, then C again, lower left point is point B.
Sorry if that isn't enought info. but thanks for your help.
Click here to see answer by Edwin McCravy(2920) |
Question 118358: I am stumped on this proof. how do you prove that the midpoints of a rhombus make a rectangle? how can i write a 2 column proof on that? Please HELP!!! IT will be greatly appreciated!!!
Click here to see answer by TP(29) |
Question 118278: I really need help putting this into a two column proof.
~ How can i prove that the midpoints of the rhombus ABCD (clockwise from top) form a rectangle MNOP (clockwise from top right hand corner)?
some of it is explained in this website: http://www.mste.uiuc.edu/m2t2/geometry/RHMRECT.HTM
i understand that if i extend B and N to meet, then i can prove that the triangle is congruent and the angles are supplemetary so the angles of the rctangle must be 90 degrees, so it is a rectangle. but what if it is a square? It wil be greatly appreciated if you can put this into a two column proof for me!! THANK YOU!!
Click here to see answer by MathLover1(1183)  |
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