Answer:
- construct PQ
- construct circles of radius PQ centered at P and Q
- label one of the points of intersection R
- Construct PR and QR
Step-by-step explanation:
You should actually do this some time. It will help you understand the construction process and help you remember the steps. It may even help you figure out why it works.
THEOREM:
- Angle sum property —: The sum of interior angles of a triangle is 180°.
ANSWER:
Let the missing angle be x.
By angle sum property,
- ∠x + 20° + 80° = 180°
- ∠x + 100 = 180°
- ∠x = 180° – 100°
- ∠x = 80°
So, <u>Correct choice</u> - [C] 80°.
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Answer:
focus: (0, -5.5)
directrix: y = 5.5
Step-by-step explanation:
The equation compares to the form ...
x² = 4py
where 4p = -22 ⇒ p = -22/4 = -5.5.
The value of p is the distance from the vertex to the focus. The negative value means the focus is below the vertex at (0, -5.5).
The directrix is above the vertex by the same amount, so is y = 5.5.
<span> A line that never changes, so you can choose whatever two points you want and you will always get the same slope.
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Answer:
150
Step-by-step explanation:
