Mathematics
Grade-8
Easy
Question
Find the measure of all the angles of the triangle.
- 34o
- 17o
- 21o
- 25o
Hint:
The sum of all angles of the triangle is 180
4a+7+5a+6+a-3=180
The correct answer is: 17o
the measure of all the angles of the triangle.
4a+7+5a+6+a-3=180
10a+10=180
a+1=18
a=18-1
a=17
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