Question

Please help! (listing BRAINLIST and giving points) ​:)​

Answer 1

Answer:

(a) = 60

(b) = 70

Step-by-step explanation:

(a) Sum of all the angles of a triangle is 180

This is an equilateral Triangle

which means all the sides are equal since all the sides are equal that means all the angles are equal

$x + x + x = 180 \\ 3x = 180 \\ x = \frac{180}{3} \\ x = 60$

(b) this is an isosceles triangle with two equal sides that means the two opposite angles are equal

$40 + x + x = 180 \\ 40 + 2x = 180 \\ 2x = 180 - 40 \\ 2x = 140 \\ x = 70$