Advertisements
Advertisements
In the following figure RP : PK= 3 : 2, then find the value of A(ΔTRP) : A(ΔTPK).

Concept: Ratios of Areas of Two Triangles
Out of the following, which is the Pythagorean triplet?
Concept: Apollonius Theorem
In the given figure, m(arc NS) = 125°, m(arc EF) = 37°, find the measure ∠NMS.

Concept: Touching Circles
Prove the following theorem:
Tangent segments drawn from an external point to the circle are congruent.
Concept: Tangent Segment Theorem
∆ABC ~ ∆LMN. In ∆ABC, AB = 5.5 cm, BC = 6 cm, CA = 4.5 cm. Construct ∆ABC and ∆LMN such that `"BC"/"MN" = 5/4`.
Concept: Construction of Similar Triangle
Determine whether the points are collinear.
A(1, −3), B(2, −5), C(−4, 7)
Concept: Distance Formula
In the following figure seg AB ⊥ seg BC, seg DC ⊥ seg BC. If AB = 2 and DC = 3, find `(A(triangleABC))/(A(triangleDCB))`

Concept: Ratios of Areas of Two Triangles
In the given figure, AD is the bisector of the exterior ∠A of ∆ABC. Seg AD intersects the side BC produced in D. Prove that:

Concept: Ratios of Areas of Two Triangles
In the given figure, ∠MNP = 90°, seg NQ ⊥ seg MP, MQ = 9, QP = 4, find NQ.

Concept: Theorem of Geometric Mean
Some question and their alternative answer are given.
In a right-angled triangle, if sum of the squares of the sides making right angle is 169 then what is the length of the hypotenuse?
Concept: Apollonius Theorem
Find the perimeter of a square if its diagonal is `10sqrt2` cm:
Concept: Apollonius Theorem
In ΔPQR, seg PM is a median, PM = 9 and PQ2 + PR2 = 290. Find the length of QR.
Concept: Apollonius Theorem
Find the side of a square whose diagonal is `10sqrt2` cm.
Concept: Pythagoras Theorem
Chord AB and chord CD of a circle with centre 0 are congruent. If m(arc AB) = 120°, then find the m(arc CD).
Concept: Property of Sum of Measures of Arcs
Write down the equation of a line whose slope is 3/2 and which passes through point P, where P divides the line segment AB joining A(-2, 6) and B(3, -4) in the ratio 2 : 3.
Concept: Division of a Line Segment
ΔRST ~ ΔUAY, In ΔRST, RS = 6 cm, ∠S = 50°, ST = 7.5 cm. The corresponding sides of ΔRST and ΔUAY are in the ratio 5 : 4. Construct ΔUAY.
Concept: Division of a Line Segment
Construct the circumcircle and incircle of an equilateral ∆XYZ with side 6.5 cm and centre O. Find the ratio of the radii of incircle and circumcircle.
Concept: Division of a Line Segment
∆PQR ~ ∆LTR. In ∆PQR, PQ = 4.2 cm, QR = 5.4 cm, PR = 4.8 cm. Construct ∆PQR and ∆LTR, such that `"PQ"/"LT" = 3/4`.
Concept: Division of a Line Segment
Find distance between point Q(3, –7) and point R(3, 3)
Solution: Suppose Q(x1, y1) and point R(x2, y2)
x1 = 3, y1 = –7 and x2 = 3, y2 = 3
Using distance formula,
d(Q, R) = `sqrt(square)`
∴ d(Q, R) = `sqrt(square - 100)`
∴ d(Q, R) = `sqrt(square)`
∴ d(Q, R) = `square`
Concept: Distance Formula
Prove that sin6θ + cos6θ = 1 – 3 sin2θ. cos2θ.
Concept: Trigonometric Identities (Square Relations)
