Answer:
- <a = 90°
- <b = 45°
- <c = 45°
- x = 10°
Step-by-step explaination:
AC is a straight line, D is a ray on it.
Hence, 135° and <b are a linear pair.
Therefore,
<b + 135° = 180°
<b = 180° - 135°
<b = 45°
And,
AC and BD are intersecting lines.
Hence, <b and <c are vertically opposite angles.
Therefore,
<b = <c
45° = <c
Also,
AC is a straight line.
Hence the angles; <a, <c and 45° add up to 180°.
Therefore,
<a + <c + 45° = 180°
<a + 45° + 45° = 180°
<a + 90° = 180°
<a = 180° - 90°
<a = 90°
CAD and TAG are interesting lines,
Hence, <CAT and <GAD are vertically opposite angles.
<CAT = <GAD
5x = 7x - 20°
5x - 7x = -20°
-2x = -20°
x = -20°/-2
x = 10°