Answer:
- Q3. x = 20°, y = 30
- Q4. x = 30°, y = 4
Step-by-step explanation:
Question 3
The triangle is equilateral
Sides are equal, internal angles are 60°
The sides
The angles
- 60° - x = 180° - (80° + 60°)
- 60° - x = 40°
- x = 60° - 40°
- x = 20°
Question 4
The bottom triangle is equilateral, the top triangle is isosceles
Sides
The equal sides of the isosceles triangle are equal with the sides of the equilateral triangle
Angles
- x + x = 60° as exterior angle of the isosceles triangle.
- 2x = 60°
- x = 30°
