MEDIUM
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The distance from the origin to the centroid of the triangle whose vertices are 7, 1, 1, 5 and 1, 6.

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Important Questions on Triangle

EASY

The measures of the sides of a triangle are 7, 8 and 9 cm. Find the length of the largest side of a similar triangle whose shortest side is 35 cm. 

(A) 55 cm 

(B) 40 cm 

(C) 45 cm 

(D) 50 cm 

EASY
The side of an equilateral triangle is 10 cm. Find its area (in cm2).
EASY
DEF is right angled at E. If m F=30o, then find the value of cosD-12.
MEDIUM
For a Right angled triangle, two connected sides are 1.5 & 2 cm. Find the area of circumcircle? 
MEDIUM
Suppose BC is a given line segment in the plane and T is a scalene triangle. The number of points A in the plane such that the triangle with vertices A,B,C (in same order) is similar to triangle T is
MEDIUM

X, Y and Z are the midpoints of the sides of ∆PQR. If the perimeter of ∆XYZ is 32 units, find the perimeter of ∆PQR.

 (A) 128 units 

(B) 64 units 

(C) 96 units 

(D) 160 units 

EASY
The circle of radius 4 cm and centre O has a tangent PR. If POR = 90o and OR = 7 cm and OP = 24 cm. Calculate the length (in cm.) of PR.
EASY
In the triangle ABCBAC=50° and the bisectors of ABC  and ACB meets at P. What is the value (in degrees) of BPC?
MEDIUM
In ABD, C is the midpoint of BD. If AB =10 cm, AD =12 cm and AC=9 cm, then BD=?
EASY
The area of an equilateral triangle is 183 sq. units. Find the value of the side (in units) of the triangle.
MEDIUM
In an equilateral triangle ABC, D, E, F are the mid-points of AB, BC, and AC respectively. The quadrilateral BEFD is a _____.
HARD
Let C1,C2 be two circles touching each other externally at the point A and let AB be the diameter of circle C1. Draw a secant BA3 to circle C2 , intersecting circle C1 at a point A1A, and circle C2 at points A2 and A3. If BA1=2,BA2=3 and BA3=4 then the radii of circles C1 and C2 are respectively
EASY

The angles of a triangle are in the ratio of 1 : 2 : 3. What is the measure of the smallest angle (in degrees)?

HARD
A very tall tree breaks from the middle due to storm. The broken part of the tree did not separate from the tree and the top of the tree touched the ground at a distance of 12 metre from the base of the tree. If the tree broke at the height of 37 metre from the ground, then what is the length of the broken portion of the tree in metres? 
MEDIUM
ABC~RQP and AB=4 cm, BC=6 cm and AC=5 cm. If ar(ABC):ar(PQR)=9:4, then PQ is equal to:
EASY
The perimeters of two similar triangles ABC and PQR are 78 cm and 46.8 cm respectively. If PQ =11.7, then the length of AB is:
EASY
In PQRR=54°, the perpendicular bisector of PQ at S meets QR at T. If TPR=46°, then what is the value(in degrees) of PQR?
EASY
In ABC, the measure of angle ABC is 90°. If tanA=125, and AB=1 cm, then what is the length (in cm) of side BC?
HARD

Let ABC be a triangle and M be a point on side AC closer to vertex C than A. Let N be a point on side AB such that MN is parallel to BC and let P be a point  on side BC such that MP is parallel to AB. If the area of the quadrilateral BNMP is equal to 518 of the area of ΔABC, then the ratio AM/MC equals

HARD
In a quadrilateral ABCD, which is not a trapezium, it is known that DAB=ABC=60°. Moreover, CAB=CBD. Then