Mark and his mom are planting vegetables in the garden mark has finished planting 10 rows of carrots so far and is planting new rows at the rate of 4 rows per hour. his mom has finished 5 tomato and will continue planting 5 rows per hour once the pair gets to the point where they have finished the same number of rows they will take a break and decide what to plant next how many rows are they each have to complete

-2

7 - 9 = -2

reversed:

-2 + 9 = 7

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc