Question

For (ABC, find the measure of(ACD​

Answer 1

ACD=66+45

=111°

EXTERIOR ANGLE IS EQUAL TO SUM OF TWO OPPOSITE INTERIOR ANGLES....

Answer 2

First,

We will find the exterior angle in the triangle.

That is,

66° + 45° = 111° [Exterior Angle Property]

Therefore,

The exterior angle will be 111°

Now,

We will find angle C

To find angle C we will use ab equation i.e.

66° + 45° + x = 180° [Angle sum property]

x = 180 - 111

x = 69°

Therefore,

The Exterior Angle is 111°

And Angle C is 69°