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MadiKonradical

Hi!

So we all know diameter is the width across the circle and radius is half of the diameter.

So since we know what diameter is, that would make #1) AC or the second option

For number two in case you don't know, angles 6 and 7 are vertical angles. Which, are CONGRUENT! YAY! That always makes it so easy! So if angle 6 is 30°, angle 7 will be, YES!! 30°! So easy!

So the answer to #2) 30°, or 4th option!



Hope I helped!


mbh292
The first answer is AC.

A diameter is a line which goes from a point on the circle to another point on the circle through the center. Or in other words, a chord which goes through the center.

The second answer is 30°.

Angle 6 and 7 are what we called the vertical angles or angles which are back to back, on the intersection of two lines. And vertical angles are always equal.