Geometry & Mensuration

Geometry and Mensuration Worksheet-7

1. The triangle formed by BC = 5 cm, AC = 3 cm, AB = 5.8 cm

(a) A right angled Δle                  (b) An isosceles Δle

(c) An equilateral Δle                  (d) A scalene Δle

2. In a ΔABC if AB² = BC² + AC², then the right angle is at

(a) A                    (b) B                   (c) C                    (d) None

Geometry and Mensuration Worksheet-8

1. If a, b and c are the sides of a Δle, then

(a) a – b > c      (b) c > a + b      (c) c = a + b      (d) b < c + a

2. If the angles of a Δle are in the ratio 1 : 2 : 7 then Δle is

(a) Acute angled                           (b) Obtuse angled

(c) Right angled                            (d) Right angled isosceles

3. A triangle always has

(a) Exactly one acute angle        (b) Exactly two acute angles

Geometry and Mensuration Worksheet-9

1. Which of the following always lies inside the triangle?

(a) Circumcentre                          (b) Incentre

(c) Orthocentre                             (d) None of these

2. Which of the following may lie outside or on the triangle?

(i)     Circumcentre

(ii)    Centroid

(iii)   Orthocentre

(iv)   Incentre