Answer:
1. x = 108°
2. Isosceles triangle
3. Scalene triangle
Explanation:
The sum of all the three angles in a triangle is 180°.
For question 1,
x + 30° + 42° = 180°
x + 72° = 180°
x = 108°
For question 2,
The triangle shown is an isosceles triangle because the both 2 angles are equal to each to other.
For question 3,
The triangle shown is a scalene triangle. Because all the angles are different from one another.
Hope it helps! Mark me brainliest if it’s correct!
