The given diagram is an illustration of angles at right-angled. The true information from the diagram are:
- [tex]\angle ABD[/tex] is a right angle.
- [tex]\angle ABD = 90^o[/tex].
From the diagram, it is given that:
[tex]\angle ABD = 90^o[/tex]
This means that the angle at [tex]\angle ABD[/tex] is at a right angle.
From the above statement,
(a) is true
(e) is true
There is no information whether line BC bisects [tex]\angle ABD[/tex] or not.
This means that:
(b), (c) and (d) cannot be determined to be true or false
Hence, the true options are:
- [tex]\angle ABD[/tex] is a right angle.
- [tex]\angle ABD = 90^o[/tex].
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