Respuesta :

Lunojay

Answer:

X = 45°

Y = 72°

Step-by-step explanation:

There is a supplementary angle (an pair of angles that create a straight line is equal to 180°) and there is the rule that all three angles in a triangle equal 180° as well.

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jakejan22101

Answer:

x = 45° , y = 72°

Step-by-step explanation:

A straight, horizontal line is equal to 180°

x = 180° - 135°

x = 45°

We can find y because we know that all three angles of a triangle equal 180°

So what do we have?

63°, 45°, y

We can make an equation:

180° - (63°+45°) = y

180°- 108° = 72°

y = 72°

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