How to tell if its a trapazoid

Compare the slopes of BC and AD and of AB and DC

Step-by-step explanation:

A trapezoid is a quadrilateral, so it must have four sides and angles . It has at least one pair of parallel sides and it has no perpendicular sides or right angles. So the best way to determine if your shape is a trapizoid is to find if it has one pair of parallel lines. You can find if there are two parallel lines by comparing slopes of opposite lines, which can be done by inputing the change in y over change in x. It will look something this with the difference between the y points being compared on top and the difference between x points on bottom.

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

source:

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.