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Aughhhh i suck at this topic

Aughhhh i suck at this topic-example-1

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Answer:

x = 18

Explanation:

The given angle is a right-angled triangle.

Such triangles have an angle that equals 90°.

The square attached at the base represents 90°. [Whenever you such a square between two sides, simply put the angle between those sides equal to 90.]

So, the points we know about this triangle:

  • One angle is = 90
  • Another angle given in the question is 72°.

*Property*

The sum of all angles in a triangle = 180

==> 90 + 72 + x = 180

==> 162 + x = 180

==> x = 180 - 162

==> x = 18

User Alex Bykov
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