Question # 1

A line segment whose end points lie on the circle is called a __________ of the circle.

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Radius

Chord

Diameter

None of these

Two arcs of two different circles are congruent if:

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The circles are congruent

The corresponding central angles are congruent

Both a and b

None of the above

The distance between the center of a circle and any point of the circle is called:

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Tangents

Secant

Diameter

Radius

The graph of the parabola y²= -4ax is symmetric about:

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x-axis

y = x

y-axis

None of these

A line through a point say P perpendicular to the tangent to the curve at P is called:

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Straight line

Tangent line

Normal line

None of these

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0

4

7

If the focus lies on the y - axis with coordinates F(0, a) and directrix of the parabola is y = -a, then the equation of parabola is:

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x² = 4ay

-x²= 4ay

-y²= 4ax

y²= 4ax

The center of circle x² + y² + 2gx + 2fy + c = 0 is:

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(-g, -f)

(-f, -g)

(0, 0)

(g, f)

A chord containing the center of the circle is called ______ of the circle:

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Diameter

Chord

Radius

None of these

The number e denotes the _________ of the conic:

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Directrix

Vertex

Focus

Eccentricity

If equation of circle is (x - h)² + (y - k)² = r², then center of a circle:

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(-h, -k)

(h, k)

(-h, k)

(h, -k)

The radius of circle x² + y² + 2gx + 2fy + c = 0 is:

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The focus of the parabola x2=-4ay is:

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(-a , 0)

(0, a)

(0, -a)

(a, 0)

The opening of the parabola x² = 4ay is upward of the:

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x -axis

y = c

y - axis

x = y

the focal chord perpendicular to the axis of the parabola is called _____________ of the parabola:

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Directrix

Latus rectum

Focus

Focal chord

The opening of the parabola y² = 4ax is to the ________ of the:

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Left

Upward

Right

Downward

One of the angles of a triangle inscribed in a circle is of 40°. If one of its' the diameter, the other angles have the measures:

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30°, 110°

40°, 100°

50°, 90°

20°, 120°

The graph of the parabola y² = -4ax lies in quadrants:

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I and II

III and IV

II and III

I and III

The axis of the parabola y² = 4ax is:

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x = 0

x = a

y = 0

y = a

If a circle and a line intersect in two points, then the line is called:

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A chord

A secant

A diameter

None of these

The axis of the parabola x² = -4ay is:

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x = a

x = 0

y = a

y = 0

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