Question # 1

If the radius of a circle is zero, then the circle is called a / an:

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Circle

Circular cone

Ellipse

Point circle

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 point where the axis meets the parabola is called ________ of the parabola:

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Directrix

Vertex

Focus

Eccentricity

The number e denotes the _________ of the conic:

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Directrix

Vertex

Focus

Eccentricity

The radius of point circle is:

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0

(0, 0)

r

1

If the equation of the parabola is y² = - 4ax, then opening of the parabola is to the ______ of the y-axis:

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Left

Upward

Right

Downward

If r is the radius of the circle and its center is at origin, then equation of circle is:

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x² + y² = a²

x² + y² = r²

x² - y² = a²

x² - y² = r²

The equi. of latus-rectum of the parabola y² = -4ax is:

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x = a

x = -a

y = a

y = -a

The graph of the parabola x² = -4ay lies in quadrants:

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I and II

III and IV

II and III

I and III

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

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x = a

x = -a

y = a

y = -a

The opening of the parabola x²= 16y is to __________ of the x-axis:

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Left

Upward

Right

Downward

Two real and distinct tangents can be drawn to a circle from any point P(x₁, y₁) ______ the circle:

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Inside

On

Outside

None of these

The point of a parabola which is closest to the focus in the:

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Directrix

Vertex

Focus

Chord

Point (5, 6) lies ..... the circle x² + y² = 81:

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Outside

Inside

On

None of these

The vertex of parabola (x - 1)² = 8 (y + 2) is:

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(1, -2)

(0, 1)

(-1, -2)

(1, 2)

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

y² = 4ax, is the standard equation of the:

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Ellipse

Parabola

Hyperbola

None of these

A circle is of radius 5 cm, the distance of a chord 8 cm long from its center is:

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4 cm

3cm

2.5cm

3.4cm

The curves obtained by cutting a __________ double right circular cone by a _______ are called conics:

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Straight line

Plane

Curve

None of these

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The vertex of the parabola y² = 4ax is:

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(-a, 0)

(a, 0)

(0, -a)

(0, 0)

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