![dreamxette3119](/avatars/12784.jpg)
dreamxette3119
29.07.2019 •
Mathematics
Will give brainliest! (see attachment) a. if ab is 20 and bc is 21, based only on the appearance of the figure, what is a good estimate for the length of ac? how do you know? b. if the actual length of ac is exactly what you computed in part a above, what is the measure of angle abc? how do you know? c. given the information from a and b above, if ae is 10 and a.f is half of ac, what is the special name for segment ef as it relates to triangle abc? d. given the result from c above, if the measure of angle efb is 43.6°, what is the measure of angle fbc? how do you know? e. if triangle dcb is congruent to triangle abc, what kind of shape is abcd? how do you know?
Solved
Show answers
More tips
- F Food and Cooking How to cook crayfish? Everything you need to know...
- G Goods and services LED-подсветка в LCD-телевизорах: 5 причин, почему она лучше других технологий...
- P Photography and Videography Understanding HDR: How It Works and Why You Need It...
- P Photography and Videography How to Choose the Perfect Photo Paper for Your Images?...
- C Computers and Internet How to Choose an Uninterruptible Power Supply (UPS) for Your Computer: Expert Tips...
- S Science and Technology How to choose a home theater system?...
- A Auto and Moto How to Choose a Car Wash? Tips and Recommendations...
- A Animals and plants How ants survive winter: exploring the secrets of their winter life...
- C Construction and repair How to Choose the Best Underfloor Heating?...
- S Sport When is the Champions League final?...
Answers on questions: Mathematics
- M Mathematics The official visual flight rules require that the distance between the ground and the bottom of the clouds to be more than 1000 feet for a plane to fly without instrumentation....
- M Mathematics Asquare sheet of paper has area 15textcm2. the front side is white and the back side is black. a corner of the sheet is lifted and placed so that the crease is at a 45circ...
- M Mathematics 8rooks are randomly placed on different squares of a chessboard. a rook is said to attack all of the squares in its row and its column. compute the probability that every square...
- M Mathematics Arectangular box has dimensions 4 by 5 by 2 . increasing each dimension of the box by the same amount yields a new box with volume six times the old. use the aleks graphing...
- M Mathematics Hugo and viviana work in an office with ten other coworkers. out of these 12 workers, their boss needs to choose a group of five to work together on a project. suppose hugo...
- M Mathematics Determine whether the following problem involves a permutation or combination. (it is not necessary to solve the problem.) how many different 33-letter passwords can be formed...
- M Mathematics solve the system of two equations in two variables. 8x + 7y = 36 3x - 4y = -13 write the solution in the form (a,b), or write: no solution...
- M Mathematics refer to a deck of fifty-two playing cards (jokers not allowed). how many five-card poker hands are possible? ?...
- M Mathematics While in paris france, part of the group goes to the observation deck of the eiffel tower (a height of 900’). someone accidently drops their phone off of the deck. the height...
- M Mathematics X+ 4 is prime x2 – 9 can be factored using the formula....
Ответ:
Part A:
From the appearance of the figure above, triangle A B C forms a right angle at B with A B and B C being the legs and A C being the hypothenuse.
Given that A B is 20 and B C is 21, by the pythagoras theorem,
Part B:
From the appearance of the figure above, triangle A B C forms a right angle at B with A B and B C as the legs and A C as the hypothenuse.
If this is true, then the measure of angle A B C is 90 degrees.
Part C:
If A E is 10 and A F is half of A C, the special name for segment E F as it relates to triangle A B C is the midsegment.
The midsegment of a triangle is a line segment which joins the midpoints of two sides of the triangle.
Part D:
Given from part C above that line segment EF is a midsegment of triangle ABC, from the triangle midsegment theorem, line segment EF is parallel to side BC.
Thus, line BF is a transverse of parallel lines EF and BC which makes angle EFB alternate to angle FBC.
Since alternate angles are equal, given that angle EFB is 43.6°, then the measure of angle FBC is also 43.6° because they are alternate angles.
Part E:
If Triangle DCB is congruent to triangle ABC, then angle B is congruent to angle C.
Given from part B that angle B = 90 degrees, then angle C = 90 degrees. Thus, the two adjacent angles of the quadrilateral ABCD = 90 degrees. Whih shows that the shape ABCD is a rectangle.
Ответ:
recycling is recycle bin is a bin in computer