Question

Given angle 1=angle2,angle 3=angle 4. Find which is greater XQ or XR.

Answer 1

Step-by-step explanation:

<1=<2

<3=<4

Adding <1 to both angles

<3+<1 = <4+<1

As mentioned above, <1=<2

Therefore, <3+<1=<2+<4

Which means: <ABC = <DBC

The Euclid's axiom used here is: "If equals are added to equals, the wholes are equal."