(10x-15) find x from the angles

Step-by-step explanation:

You can see the angle opposite to (10x-15) is equal because it is a corresponding angle (learn about them or ask)

The corresponding angle of 10x-15 is 90

so

10x-15=90

now this is simple algebra

10x=90+15

10x=105

x=105/10

x=10.5

60°

step-by-step explanation:

the measure angle of c in an isosceles triangle abc is 60° because in isosceles triangle,the measures of all the angles is 60°.