Name the types of following triangles: (a) Triangle with lengths of sides 7 cm, 8 cm and 9 cm. (b) $∆ABC$ with AB = 8.7 cm, AC = 7 cm and BC = 6 cm. (c) $∆PQR$ such that PQ = QR = PR = 5 cm. (d) $ ∆DEF$ with m $∠$ D = 90° (e) $∆XYZ$ with m $∠$ Y = 90° and XY = YZ. (f) $∆LMN$ with m $∠$ L = 30°, m $∠$ M = 70° and m $∠$ N = 80°.

Question

Name the types of following triangles:  (a) Triangle with lengths of sides 7 cm, 8 cm and 9 cm. (b)  $∆ABC$  with AB = 8.7 cm, AC = 7 cm and BC = 6 cm.  (c)  $∆PQR$  such that PQ = QR = PR = 5 cm.  (d)  $ ∆DEF$  with m $∠$  D = 90°  (e)  $∆XYZ$  with m  $∠$ Y = 90° and XY = YZ.  (f)  $∆LMN$  with m  $∠$ L = 30°, m  $∠$ M = 70° and m  $∠$ N = 80°.

cdquestions Admin · Accepted Answer

(a) Scalene triangle  (b) Scalene triangle  (c) Equilateral triangle  (d) Right-angled triangle  (e) Isosceles right-angled triangle  (f) Acute-angled triangle

Measure of Triangle		Types of Triangle
(i)	3 sides of equal length	(a)	Scalene
(ii)	2 sides of equal length	(b)	Isosceles right angle
(iii)	All sides are of different length	(c)	Obtuse angle
(iv)	3 acute angles	(d)	Right angle
(v)	1 right angle	(e)	Equilateral
(vi)	1 obtuse angle	(f)	Acute angle
(vii)	1 right angle with two sides of equal length	(g)	Isosceles

Solution and Explanation

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