Question

Find the measure of angle x in the figure below:

Two triangles are shown such that one triangle is inverted and share a common vertex. The lower triangle has two angles at the base marked as 75 degrees each. The angle at the vertex of the inverted triangle at the top is marked as x degrees.

15°
25°
30°
60°

Answer 1

@Michele_Laino. Here it is

Answer 2

use the fact that the 3 angles in a triangle add up to 180 degrees

Answer 3

hint:

Answer 4

also when 2 lines cross the opposite angles are equal

Answer 5

we have a pair of vertical angles
so we can write:
x + 75 +75 = 180

Answer 6

Ok im going to work it out

Answer 7

I got 30

Answer 8

that's right!

Answer 9

Is that the correct answer

Answer 10

yes!