Question

1. Find the measure of the third angle of the triangle if two of its angles are:
(¡) 40°, 70° (¡¡) 105°, 24° (¡¡¡) 69°,38°
2. Which of the following numbers could be the possible lengths of the sides of a triangle?
(¡) 5,6,10 ¡¡) 10,10,20
(¡¡¡) 4.10.12
Which of the following are sides of a right triangle?
(i) 3 cm , 5 cm , 6 cm (ii) 8 cm, 15 cm , 17 cm
Name the triangle in which :
( ¡ ) the median and altitude from one of the vertex are the same or coincide.
(ii) the medians and altitudes from each vertex coincide with each other.
(iii) two altitudes are two of its sides.
(iv) sum of the two acute angles is 90°
5. In a triangle ABC, <B= 90°
a) Find AC, If AB = 8cm and BC = 6 cm
b) Find AB, if AC = 13 andb BC= 5
Find the angles of a triangle if:
(1) one of the exterior angle is 119° and the interior opposite angles are in the ratio 8:9.
(ii) the acute angles of a right triangle are in the ratio 4:5.
(iii) the angles of a triangle are in the ratio 4 : 5 : 1 .​

Answer 1

Answer:

1. 1) 70°

2) 51°

3)73°

hope it is helpful

Answer 2

Answer:

....... hope it helps you

Step-by-step explanation:

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