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Recent questions tagged triangles
+3
votes
1
answer
In a triangle ABC, if cos A /a = cos B /b and ∠ C =30. If a = 2cm then area of ΔABC is
asked
Apr 7, 2019
in
Class 12
by
kratos
cbse
areas related to circles
class-10
class-12
icse
triangles
scalar or dot products
constructions
vector
+2
votes
1
answer
Prove that if a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct points,
asked
Apr 6, 2019
in
Class 10
by
kratos
ncert
class-10
triangles
cbse
+1
vote
1
answer
E is a point on the side AD produced of a parallelogram ABCD and BE Intersects CD at F.
asked
Apr 6, 2019
in
Class 10
by
kratos
class-8
class-10
triangles
cbse
+2
votes
1
answer
In Fig. 7.15,DE || OQ and DF || OR, Show that BF || QR.
asked
Apr 5, 2019
in
Class 10
by
kratos
similarity
cbse
class-9
class-10
triangles
+2
votes
1
answer
Prove that the ratio of the areas of two similar triangles is equal to the ratio of the squares of their corresponding sides.
asked
Apr 5, 2019
in
Class 10
by
kratos
ncert
class-10
triangles
cbse
+3
votes
0
answers
Two towers of height 14m and 25cm stand on level ground. The angles of elevation of their tops
asked
Apr 5, 2019
in
JEE
by
kratos
heights and distances
cbse
trigonometry
class-10
jee mains 2019
triangles
+2
votes
1
answer
ln ΔABC, AD ⊥ BC and point D **** on BC such that 2 DB = 3 CD.Prove that 5AB^2 = 5 AC^2 + BC^2
asked
Apr 5, 2019
in
Class 10
by
kratos
class-10
triangles
cbse
+2
votes
1
answer
The hypotenuse of a right-angled triangle is 1 meter less than twice the shortest side. If the third side 1 meter more than the shortest side
asked
Apr 5, 2019
in
Class 10
by
kratos
class-8
quadratic equations
class-10
triangles
geometry
+3
votes
1
answer
Find x, y, z (whichever is required) from the figure.
asked
Apr 5, 2019
in
Class 10
by
kratos
properties of triangles
trigonometry
class-10
class-7
triangles
congruent triangles
+2
votes
1
answer
State whether the statements are True or False.It is possible to have a right-angled equilateral triangle.
asked
Apr 4, 2019
by
kratos
ncert
class-7
triangles
+3
votes
1
answer
Choose the correct one. In Fig. 6.12, PQ = PR, RS = RQ and ST || QR. If the exterior angle RPU is 140°, then the measure of angle TSR
asked
Apr 4, 2019
in
Class 10
by
kratos
ncert
class-10
class-7
triangles
+2
votes
1
answer
D and,E are points on the sides CA and CB respectively of a triangle ABC right angled at C. prove that AE^2 + BD^2 = AB^2 +DE^2 .
asked
Apr 4, 2019
in
Mathematics
by
kratos
pythagoras theorem
cbse
ncert class 10 maths
class-10
triangles
+3
votes
1
answer
In ΔDEF, DE = 3 cm, EF = 4 cm and in ΔPQR, PQ = 9 cm. If triangles ΔDEF and ΔPQR are similar, then what is QR in cm ?
asked
Apr 4, 2019
in
Class 10
by
kratos
similarity
cbse
class-10
icse
triangles
+1
vote
1
answer
Choose the correct one. Which of the following statements is not correct? (a) The sum of any two sides of a triangle is greater than the third side
asked
Apr 3, 2019
by
kratos
ncert
class-7
triangles
+1
vote
1
answer
Angle ABC= angle BAC,D and E are points on BC and AC such that DB=AE. If AD and BE intersect at O then prove that OA=OB
asked
Apr 3, 2019
in
Class 10
by
kratos
class-10
triangles
+1
vote
1
answer
Internal bisector of ∠A of triangle ABC meets side BC at D. A line drawn through D perpendicular to AD intersects
asked
Apr 3, 2019
in
JEE
by
kratos
properties of triangles
jee
class-9
class-7
jee mains
triangles
congruence and inequalities of triangles
triangle
+2
votes
1
answer
The bisectors of base angles of a triangle cannot enclose a right angle in any case.
asked
Apr 3, 2019
in
Class 9
by
kratos
class-9
triangles and its angles
triangles
+3
votes
1
answer
In ΔABC , AD ⊥ BC, such that AD^2 = BD x CD. Prove that ΔABC is right angled at A.
asked
Apr 2, 2019
in
Class 10
by
kratos
similarity
cbse
class-10
icse
triangles
+1
vote
1
answer
In a right triangle ABC, right angled at C. P and Q are points of the sides CA and. CB respectively, which divide these sides in the ratio 2 : 1.
asked
Apr 2, 2019
in
Mathematics
by
kratos
pythagoras theorem
cbse
class-8
ncert class 10 maths
class-10
triangles
+3
votes
1
answer
With usual notation, if in a triangle ABC (b + c)/11 = (c + a)/12 = (a + b)/13,
asked
Apr 1, 2019
in
JEE
by
kratos
properties of triangles
jee
jee mains
triangles
triangle
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