2 years ago

Please answer this. As soon as possible!

Mathematics

1 answer:

andrey2020 [161]2 years ago

6 0

Answer:

a) 90°

b) (d) The angle at the circumference in a semicircle is a right angle

Step-by-step explanation:

An inscribed angle has half the measure of the arc it subtends.

Angle ABC is inscribed in a semicircle and subtends an arc of 180°, so has a measure of 180°/2 = 90°. Here, that observation is described by ...

The angle at the circumference in a semicircle is a right angle

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