The two figures are similar. find the ratios (shaded to nonshaded) of the
perimeters and of the areas.

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

This is about circle theorems. someone asap : (