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3 years ago

Please help and explain

Mathematics

1 answer:

insens350 [35]3 years ago

6 0

Answer:

135 degree angle

Step-by-step explanation:

1. Triangle Sum Theorem: Calculate the angles of the triangle.

Remember that the sum of all the angles of ANY triangle is 180 degrees. To find the missing angle of the triangle all we need to do is subtract 180 degrees with 69 and 66 to get the missing angle of the triangle (45 degrees)

2. Angle Sum Theorem?: Note: the degrees of a straight line is 180 degrees

We now know that the missing angle of the triangle is 45 degrees. We also know that the degree of a straight line will always equal to 180 degrees. We can find angle x by doing 180 - 45, similarly to when we found the missing angle.

Answer: 123 degree angle

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