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Geometry Mathematics 2 Set 1 2019-2020 SSC (English Medium) 10th Standard Board Exam Question Paper Solution

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Geometry Mathematics 2 [Set 1]
Marks: 40 Maharashtra State Board
SSC (English Medium)
SSC (Marathi Semi-English)

Academic Year: 2019-2020
Date & Time: 14th March 2020, 11:00 am
Duration: 2h
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  1. All questions are compulsory.
  2. Use of calculator is not allowed.
  3. The numbers to the right of the questions indicate full marks.
  4. In the case of MCQ’s Q. No. 1(A) only the first attempt will be evaluated and will be given credit.
  5. For every MCQ, the correct alternative (A), (B), (C) or (D) in front of subquestion number is to be written as an answer.

[8]1
[4]1.A | For every subquestion 4 alternative answers are given. Choose the correct answer and write the alphabet of it:
[1]1.A.i

Out of the following, which is the Pythagorean triplet?

(1, 5, 10)

(3, 4, 5)

(2, 2, 2)

(5, 5, 2)

Concept: undefined - undefined
Chapter: [0.02] Pythagoras Theorem
[1]1.A.ii

Two circles of radii 5.5 cm and 3.3 cm respectively touch each other externally. What is the distance between their centres?

4.4 cm

2.2 cm

8.8 cm

8.9 cm

Concept: undefined - undefined
Chapter: [0.03] Circle
[1]1.A.iii

Fill in the blank using correct alternative.

Distance of point (–3, 4) from the origin is ______.

7

1

5

−5

Concept: undefined - undefined
Chapter: [0.05] Co-ordinate Geometry
[1]1.A.iv

Find the volume of a cube of side 3 cm ______.

27 cm3

9 cm3

81 cm3

3 cm3

Concept: undefined - undefined
Chapter: [0.07] Mensuration
[4]1.B | Solve the following questions:
[1]1.B.i

The ratio of corresponding sides of similar triangles is 3 : 5, then find the ratio of their areas.

Concept: undefined - undefined
Chapter: [0.01] Similarity
[1]1.B.ii

Find the diagonal of a square whose side is 10 cm.

Concept: undefined - undefined
Chapter: [0.07] Mensuration
[1]1.B.iii

`square`ABCD is cyclic. If ∠B = 110°, then find measure of ∠D.

Concept: undefined - undefined
Chapter: [0.03] Circle
[1]1.B.iv

Find the slope of the line passing through the points A(2, 3) and B(4, 7).

Concept: undefined - undefined
Chapter: [0.05] Co-ordinate Geometry
[12]2
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[4]2.A | Complete and write any TWO activities from the following:
[2]2.A.i

In the figure given above, ‘O’ is the centre of the circle, seg PS is a tangent segment and S is the point of contact. Line PR is a secant.
If PQ = 3.6, QR = 6.4, find PS.

Solution:

PS2 = PQ × `square` ......(tangent secant segments theorem)

= PQ × (PQ + `square`)

= 3.6 × (3.6 + 6.4)

= 3.6 × `square`

= 36

∴ PS = `square` .....(by taking square roots)

Concept: undefined - undefined
Chapter: [0.03] Circle
[2]2.A.ii

If sec θ = `25/7`, find the value of tan θ.

Solution:

1 + tan2 θ = sec2 θ

∴ 1 + tan2 θ = `(25/7)^square`

∴ tan2 θ = `625/49 - square`

= `(625 - 49)/49`

= `square/49`

∴ tan θ = `square/7` ........(by taking square roots)

Concept: undefined - undefined
Chapter: [0.06] Trigonometry
[2]2.A.iii

In the figure given above, O is the centre of the circle. Using given information complete the following table:

Type of arc Name of the arc Measure of the arc
Minor arc `square` `square`
Major arc `square` `square`
Concept: undefined - undefined
Chapter: [0.03] Circle
[8]2.B | Solve any FOUR subquestions from the following:
[2]2.B.i

In ΔPQR, NM || RQ. If PM = 15, MQ = 10, NR = 8, then find PN.

Concept: undefined - undefined
Chapter: [0.01] Similarity
[2]2.B.ii

In ΔMNP, ∠MNP = 90˚, seg NQ ⊥ seg MP, MQ = 9, QP = 4, find NQ.

Concept: undefined - undefined
Chapter: [0.02] Pythagoras Theorem
[2]2.B.iii

In the given figure, M is the centre of the circle and seg KL is a tangent segment. L is a point of contact. If MK = 12, KL = `6sqrt3`, then find the radius of the circle.

Concept: undefined - undefined
Chapter: [0.03] Circle
[2]2.B.iv

Find the coordinates of midpoint of the segment joining the points (22, 20) and (0, 16).

Concept: undefined - undefined
Chapter: [0.05] Co-ordinate Geometry
[2]2.B.v

A person is standing at a distance of 80 m from a church looking at its top. The angle of elevation is of 45°. Find the height of the church.

Concept: undefined - undefined
Chapter: [0.06] Trigonometry
[9]3
[3]3.A | Complete and write any ONE activity from the following:
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[3]3.A.i

In the given figure, X is any point in the interior of the triangle. Point X is joined to the vertices of triangle. seg PQ || seg DE, seg QR || seg EF. Complete the activity and prove that seg PR || seg DF.

Proof:

In ΔXDE, PQ || DE ......(Given)

∴ `"XP"/"PD" = square/"QE"` ......(Basic proportionality theorem)…(i)

In ΔXEF, QR || EF ......(Given)

∴ `"XQ"/square = "XR"/square` ..........(`square`)....(ii)

∴ `"XP"/"PD" = square/square` ......[From (i) and (ii)]

∴ seg PR || seg DF ......(By converse of basic proportionality theorem

Concept: undefined - undefined
Chapter: [0.01] Similarity
[3]3.A.ii

If A(6, 1), B(8, 2), C(9, 4) and D(7, 3) are the vertices of `square`ABCD, show that `square`ABCD is a parallelogram.

Solution:

Slope of line = `("y"_2 - "y"_1)/("x"_2 - "x"_1)`

∴ Slope of line AB = `(2 - 1)/(8 - 6) = square` .......(i)

∴ Slope of line BC = `(4 - 2)/(9 - 8) = square` .....(ii)

∴ Slope of line CD = `(3 - 4)/(7 - 9) = square` .....(iii)

∴ Slope of line DA = `(3 - 1)/(7 - 6) = square` .....(iv)

∴ Slope of line AB = `square` ......[From (i) and (iii)]

∴ line AB || line CD

∴ Slope of line BC = `square` ......[From (ii) and (iv)]

∴ line BC || line DA

Both the pairs of opposite sides of the quadrilateral are parallel.

∴ `square`ABCD is a parallelogram.

Concept: undefined - undefined
Chapter: [0.05] Co-ordinate Geometry
[6]3.B |  Solve any TWO subquestions from the following:
[3]3.B.i

In ∆PQR, point S is the midpoint of side QR. If PQ = 11, PR = 17, PS = 13, find QR.

Concept: undefined - undefined
Chapter: [0.02] Pythagoras Theorem
[3]3.B.ii

Prove the following theorem:

Tangent segments drawn from an external point to the circle are congruent.

Concept: undefined - undefined
Chapter: [0.03] Circle
[3]3.B.iii

Draw a circle with radius 4.1 cm. Construct tangents to the circle from a point at a distance 7.3 cm from the centre.

Concept: undefined - undefined
Chapter: [0.04] Geometric Constructions
[3]3.B.iv

A metal cuboid of measures 16 cm × 11 cm × 10 cm was melted to make coins. How many coins were made, if the thickness and diameter of each coin was 2 mm and 2 cm respectively? (π = 3.14)

Concept: undefined - undefined
Chapter: [0.07] Mensuration
[8]4 | Solve any TWO subquestions from the following:
[4]4.A

In ΔABC, PQ is a line segment intersecting AB at P and AC at Q such that seg PQ || seg BC. If PQ divides ΔABC into two equal parts having equal areas, find `"BP"/"AB"`.

Concept: undefined - undefined
Chapter: [0.01] Similarity
[4]4.B

Draw a circle of radius 2.7 cm and draw a chord PQ of length 4.5 cm. Draw tangents at points P and Q without using centre.

Concept: undefined - undefined
Chapter: [0.03] Circle
[4]4.C

In the given figure `square`ABCD is a square of side 50 m. Points P, Q, R, S are midpoints of side AB, side BC, side CD, side AD respectively. Find area of shaded region

Concept: undefined - undefined
Chapter: [0.07] Mensuration
[3]5 | Solve any ONE subquestions from the following:
[3]5.A

Circles with centres A, B and C touch each other externally. If AB = 3 cm, BC = 3 cm, CA = 4 cm, then find the radii of each circle.

Concept: undefined - undefined
Chapter: [0.03] Circle
[3]5.B

If sin θ + sin2 θ = 1 show that: cos2 θ + cos4 θ = 1

Concept: undefined - undefined
Chapter: [0.06] Trigonometry

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