3. Name each of the following triangles in two different ways: (you may judge the nature of the angle by observation)
(a)(i) Acute angled triangle.
(ii) Isosceles triangle.
(b)(i) Right angled triangle.
(ii) Scalane triangle.
(c)(i) Obtuse angled triangle.
(ii) Isosceles triangle.
(d)(i) Right angled triangle.
(ii) Isosceles triangle.
(e)(i) Acute angled triangle.
(ii) Equilateral triangle.
(f)(i) Obtuse angled triangle.
(ii) Scalane triangle.