Examine the diagrams below. For each one, write and solve an equation to calculate the value of x. Show all work. Homework Help ✎
Equilateral triangles have three congruent angles.
This is a right triangle, so use the Pythagorean Theorem to solve for x.
∠y = 180° − 103° − 51°
Because ∠y and ∠z are alternate interior angles,
x = 72°
3x − 2 = 2x + 9