The square in the corner indicates the triangle is a right triangle. The two lines represent congruence. Since the triangle has two equal lines, it is an isosceles triangle. Overall, the triangle is isosceles and right.
1) 475 2)375 You need to multiply 25 by 27 and you get 675 then to get answer one you need to multiply 10 by 20 to get 200 the take 200 away from 675 to get 475 then do the same thing with the second problem 20x15 which is 300 the take 300 away from 675.
