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#8)  yes. Two lines can only be non-intersecting if their slopes are exactly the same (otherwise they'd have to cross at some point). So the two lines can only be parallel because they never cross and move with the same slope.

Step-by-step explanation:

#10) A) Right angles

B) straight angle

#11) rhombus

#12) Isosceles triangle: 2 sides equal. Equilateral triangle is also isosceles because it has at least 2 sides equal. But isosceles triangle is not equilateral because it doesn't have 3 sides equal.

c

step-by-step explanation:

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.