Question

Find the unknown angle in each triangle:
a
A
66°
?
50°
DB
с​

Answer 1

To determine to measure of the unknown angle, be sure to use the total sum of 180°. If two angles are given, add them together and then subtract from 180°. If two angles are the same and unknown, subtract the known angle from 180° and then divide by 2.

Answer 2

Answer:

unknown angle x = 180°-(66°+50°)

= 180°-116°

= 64°

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