Important Theory / Shots Trick on Triangles
Section 1
Section 2
31. Length of the sides of a triangle are a, b and c respectively. If a2 + b2 + c2 = ab + bc + ca then the triangle is:
32. PQR is an equilateral triangle. MN is drawn parallel to QR such that M is on PQ and N is on PR. If PN = 6 cm, then the length of MN is:
33. Incenter of ΔABC is I. ∠ABC = 90° and ∠ACB = 70°. ∠BIC is:
34. If in ΔABC, DE || BC, AB = 7.5 cm BD = 6 cm and DE = 2 cm then the length of BC in cm is:
35. Which of the set of three sides can't form a triangle?
36. The orthocenter of a triangle is the point where?
37. Possible length of the sides of a triangle are:
38. The centroid of a triangle is G. If area of ΔABC = 72 sq. unit, then the area of ΔBGC is?
39. Three sides of a triangle are 5 cm, 9 cm and x cm. The minimum integral value of x is:
40. ABC is an isosceles triangle inscribed in a circle. If AB = AC = 12$$\sqrt 5 $$ and BC = 24 cm then radius of circle is:
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