Question

4. The two angles of a triangle are complementary. The third angle is
(a) 60°
(b) 45°
(c) 36°
(d) 90°
5. One of the base angles of an isosceles triangle is 70°. The vertical angle is
(a) 60°
(b) 80°
(c) 40°
(d) 35°
6. A triangle having sides of different lengths is called
(a) an isosceles triangle
(b) an equilateral triangle
(c) a scalene triangle
(d) a right triangle
7. In an isosceles ABC, the bisectors of ZB and ZC meet at a point 0. If ZA = 40°, then
ZBOC = ?
(a) 110°
(b) 70°
(c) 130°
(d) 150°
8. The sides of a triangle are in the ratio 3 : 2:5 and its perimeter is 30 cm. The length of the
longest side is
(a) 20 cm
(b) 15 cm
(c) 10 cm
(d) 12 cm​

Answer 1

Answer:

have answered everything I know

Step-by-step explanation:

4. 90°

5. 40°

6. a scalene triangle

7.

8.am nt sure