2 years ago

A quadrilateral has three angles measuring 60 º , 45 º, and 100 º . What is the measure of the fourth angle?

1 answer:

3 0

Answer:

155°

Step-by-step explanation:

The sum four angles is 360° so:

60°+45°+100°+x=360°

x = 360°-100°-45°-60°=155°

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