Answer: Only one.
Step-by-step explanation:
Let Δ ABC be a right isosceles triangle with two sides are 4 inches and the angle between them is 90°.
Then all the triangles with same measurement will be congruent to Δ ABC by SAS congruency criteria .
Therefore, there is only one triangle possible for the given measurement.
- <em>The </em><em>SAS postulate </em><em>says that if two sides and the included angle of a triangle are congruent to two sides and the included angle of another triangle, then the two triangles are congruent.
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Answer:
Step-by-step explanation:
The vertex and focus are horizon aligned, so the parabola is horizontal and the directrix is a vertical line.
The vertex is halfway between focus and directrix. Directrix: x = -4
Answer:
20% decrease
Step-by-step explanation:
Start by dividing 40 by 50.
40/50 = 0.8
0.8 is the decimal form of 80%. So now we know that 40 is 80% of 50. This means that the remaining 20% is the difference between the books read in November and December.
The other one is 90 minus 49 or 41 degrees