Using the triangle below find the value of x and then find all of the angle measures.

x=50

top corner =2x =100

bottom left =x =50

bottom right =x-20 =30

Step-by-step explanation:

all angles of a triangle add up to 180° so:

(x-20) + (2x) + x = 180

then remove redundant parentheses

x-20 + 2x + x = 180

add like terms

2 − 20 + 2 =180

Rearrange terms

2+2−20=180

add 20 to both sides of the equation

2+2−20 +20=180+20

simplify

2+2=200

add

4x=200

divide 4 to both sides of the equation

4x/4=200/4

simplify

x=50

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