2 years ago

In the diagram below, P is circumscribed about quadrilateral ABCD.

Mathematics

2 answers:

NeX [460]2 years ago

7 0

Answer:

The value of x is 80° .

Step-by-step explanation:

As shown in the diagram.

The quadrilateral is inscribed in a circle.

Now using the property

Opposite angles in any quadrilateral inscribed in a circle are supplements of each other. (Their measures add up to 180 degrees.)

Thus

∠A + ∠C = 180°

As ∠A = 100° , ∠C = x

Put in the above

100° + x = 180°

x = 180° - 100°

x = 80°

quester [9]2 years ago

6 0

So: A + C = 180°
X + 20° + 110° = 180°
Then:
X = 50°

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