Question

define daimeter and straight angle
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Answer 1

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★ A diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle.

★ It can also be defined as the longest chord of the circle. Both definitions are also valid for the diameter of a sphere.

Answer 2

Step-by-step explanation:

In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle.

an angle whose sides lie in opposite directions from the vertex in the same straight line and which equals two right angles.