Help me on isosceles and equilateral triangles problems. Find the value of x in the triangle shown below.

Mathematics

1 answer:

trapecia [35]2 years ago

3 0

Answer:

x° = 61°

Step-by-step explanation:

Both of the "unknown" angles in the triangle are equal, since their opposite sides have equal lengths. (The triangle is isosceles.) The sum of angles in a triangle is 180°, so we have ...

58° + x° + x° = 180°

2x° = 122° . . . . subtract 58°, collect terms

x° = 61° . . . . . . . divide by 2

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