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5 cards from this section. Quick, good the night before a test.
What is the angle subtended by a diameter?
Think about what kind of triangle this forms.
If I have an angle of 40° at the circumference, what is the angle at the center?
Remember the relationship between center and circumference angles.
What is the angle subtended by a diameter?
Remember the triangle properties associated with diameters.
Two angles subtended by the same arc are equal.
Recall the rules about segments in circles.
In a circle with a radius of 12 cm, a chord is drawn measuring 10 cm. Calculate how far the center is from the chord.
Use the right triangle rule to find the distance.
Prove that if two tangents are drawn from a point outside a circle to the points of tangency, these tangents are equal in length.
Identify the congruent triangles formed.
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