Question

Write two equivalent expressions to represent the sum of the angles of this triangle.

please help I can't remember how find the sums of a triangles angles
100 points

Answer 1

Explanation:

The 3 angles add up to 180 degrees

2y + 2y + 5y = 180

9y = 180

Answer 2

`\qquad\qquad\huge\underline{{\sf Answer}}`

As we know, Sum of all three Angles of Triangle is equal to 180° [ by Angle sum property of triangle ]

So, the required expression is :

`\qquad \tt \dashrightarrow \:5y + 2y + 2y = 180`

or

`\qquad \tt \dashrightarrow \:9y = 180`

if you solve for y, you will get y = 20°

And the angles as 100°, 40° and 40°