3. Name each of the following triangles in two different ways: (you may judge the nature of the angle by observation)
2. Match the following :
|Measure of triangles||Types of triangle|
|(i) 3 sides of equal length||(a) Scalene|
|(ii) 2 sides of equal length||(b) Isoscles right angled|
|(iii) All sides of different length||(c) Obtuse angled|
|(iv) 3 acute angles||(d) Right angled|
|(v) 1 right angle||(e) Equilateral|
|(vi) 1 obtuse angle||(f) Acute angled|
|(vii) 1 right angle with two sides of equal length||(g) Isosceles|
1. Name the types of following triangles :
(a) Triangle with lengths of sides 7 cm, 8 cm and 9 cm.
(b) with AB = 8.7 cm, AC = 7 cm and BC = 6 cm.
(c) such that PQ = QR = PR = 5 cm.
(e) with and XY = YZ.
(f) with , and