1 .Two parallel lines intersect at:
a. One point
b. Two points
c. Three points
d. Null 1
2.A reflex angle is:
a. More than 90 degrees
b. Equal to 90 degrees
c. More than 180 degrees
d. Equal to 180 degrees
3.For two triangles, if two angles and the included side of one triangle are :
equal to two angles and the included side of another triangle. Then the
congruency rule is:
a. SSS
b. ASA
c. SAS
d. None of the above
Answers
Step-by-step explanation:
1. Option d. Null 1
2. Option c. More than 180 degrees
3. Option b. ASA
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Given : Two parallel lines
To Find : How many points they intersects
Solution:
Pair of linear equations
a₁x + b₁y + c₁ = 0
a₂x + b₂y + c₂ = 0
Consistent
if a₁/a₂ ≠ b₁/b₂ (unique solution and lines intersects each others)
a₁/a₂ = b₁/b₂ = c₁/c₂ (infinite solutions and line coincide each other )
Inconsistent
if a₁/a₂ = b₁/b₂ ≠ c₁/c₂ ( No solution , lines are parallel to each other)
No solution , lines are parallel to each other
Hence Two parallel lines intersect at Null
A reflex angle is: More than 180 degrees
if two angles and the included side of one triangle are :
equal to two angles and the included side of another triangle. Then the
congruency rule is: ASA
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