What criteria is needed to prove that objects are similar

The angles must be congruent.

Step-by-step explanation:

I.e., If a triangles angles are 100, 40 and 40, and it's sides are 5, 7 and 7, A triangle that has the angles of 100, 40 and 40, but sides of 10, 14 and 14, is similar to the first triangle.

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.