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help me with which triangle it is and how do I find x?

Help Me With Which Triangle It Is And How Do I Find X class=

Sagot :

Answer:

x = 4

Step-by-step explanation:

that's an equilateral triangle, 3 equal side and 3 equal angles of 60°,

so 10x + 20 = 60

solve with an equation

10x + 20 = 60

10x = 60 - 20

10x = 40

x = 40 : 10

x = 4

--------------------------

check

10 * 4 + 20 =

60°

the answer is good