Question

How would u answer #10

Answer 1

Easy
all angles add to 180
also
exterior angle=sum of oposite 2 interior angles
whihch are in in ratio of 2:3
2+3=5
5 units
130=5units
divdie by 5
26=1unit
times 2 isi 52
times 3 is 78

the angles are 130, 52 and 78
see their exterio angles (exterio angle of angle x is 180-x)
180-52=128
180-78=102
interior angle of the 130 is 180-130=50

biggest exterior angle (angd overall angle) is 130
biggest interior angle is 78 degrees

Answer 2

So if the exterior angle is 130°, then the inner angle is 50°.
The total of the inner angles of a triangle is (n-2)180°=180°, so 180°-50°=130°
With the remaining two angles =130° and they are both in the ratio of 2:3, one angle has a measure of 52° and 78°.
Thus the measure of the largest angle is 78°.