1. the dot is solid so it is x≥4
2. the dot is open so the answer is x≠4
Answer:
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Step-by-step explanation:
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Answer:
Option (1)
Step-by-step explanation:
''A perpendicular bisector makes 90° with the other line segment and divides the segment into two equal parts."
From the given picture,
If is a perpendicular bisector of following properties must be followed.
1). m(∠DBC) = m(∠DBA) = 90°
2). AB ≅ BC
Therefore, additional information we will require is AB ≅ BC
Option (1) will be the answer.
Answer:
50 units.
Step-by-step explanation:
Answer:
Step-by-step explanation:
Consider the triangle XYW.
<u>Since ∠X is right angle, the other two angles are complementary:</u>
Also, VWX and ZYX are straight angles, which are equal to 180°.
<u>According to angle addition postulate we have:</u>
- m∠Y = 180° - 4x and
- m∠W = 180° - 6x
<u>Add up the above two and compare with first sum, then solve for x:</u>
- m∠Y + m∠W = 90°
- 180° - 4x + 180° - 6x = 90°
- 360° - 10x = 90°
- 10x = 270°
- x = 27°