EASY
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If one angle of a triangle is equal to the sum of the other two angles, then the triangle is a/an

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Important Questions on The Triangle and its Properties

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What is the area of a triangle whose sides are 7 cm, 24 cm and 25 cm?
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The perimeter of an isosceles triangle is 50 cm. If the base is 18 cm, then find the length of the equal sides.
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In ΔABC, AB=c cm, AC=b cm and CB = a cm. If A=2B , then which of the following is true?
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The sum of all the three sides of an equilateral triangle is 153 cm. The height of the triangle is_____.
MEDIUM
For a Right angled triangle, two connected sides are 1.5 & 2 cm. Find the area of circumcircle? 
MEDIUM
In a right-angled triangle ABC right angled at C, sin A=sin B. What is the value of cos A?
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In the given figure ABC, if θ=80°, the measure of each of the other two angles will be:
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MEDIUM
Triangles ABC and DBC are right-angled triangles with common hypotenuse BC, BD, and AC intersect at P when produced. If PA=8 cm, PC=4 cm and PD=3.2 cm, then the length of BD in cm is:
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In PQR measure of angle Q is 90o. If tan P=247 and PQ =14cm, then what is the length of side QR in cm.
MEDIUM
In ABC, A=90°, M is the midpoint of BC and D is the point on BC such that ADBC. If AB=7cm and AC=24cm, then AD:AM is equal to?
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What is the perimeter of a right-angled triangle whose sides (making 90°) are 203 cm and 153 cm?
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The side of an equilateral triangle is 10 cm. Find its area (in cm2).
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In triangle ABC, if B=90°, AB=21 cm and BC=20 cm, then 1+sinA-cosA1+sinA+cosA is equal to:
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BD and CE are the medians of ABC, right angles at A. If CE =5132 cm, BC =10 cm, then the length of BD is ____.
MEDIUM
ABC is an equilateral triangle with side 18 cm.D is a point on BC such that BD=13BC . Then length (in cm) of A D is:
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Let ABC be a triangle right-angled at C, then what is tanA+tanB equal to?
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Point M and N are on the sides PQ and QR respectively of a triangle PQR, right angled at Q. If PN=9 cm, MR=7cm, and MN = 3 cm, then find the length of PR (in cm).
MEDIUM
In a Triangle , if AB=AC and ABC=72° , then BAC is:
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DEF is right angled at E. If m F=30o, then find the value of cosD-12.
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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?