Arrange the three congruent triangles so that angles one and three are adjacent to one another and angle two is adjacent angles one and three.
and if you can answer the rest

We can notice about the three angles that their addition is equal to 180°

They appear to form a trapezoid

Step-by-step explanation:

In the picture attached, the arrangement is shown.

The triangle postulate states that the sum of the angles of a triangle is two right angles. In this case, ∠1 + ∠2 + ∠3 = 180° (see the picture)

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500