Geometryeasy · Past Paper
If the slope of two lines are m1 and m2, what is the condition for them to be parallel?
Am1 * m2 = -1
Bm1 = m2
Cm1 + m2 = 0
Dm1 = -m2
✓ Correct Answer: B — m1 = m2
Parallel lines have the same steepness, so their slopes must be equal (m1 = m2).
Share this question
More from Geometry
- The point where the three medians of a triangle intersect is called the:
- A chord of a circle is equal to its radius. Find the angle subtended by this chord at a point on the major arc.
- Two triangles are similar by SAS criterion if:
- What is the complement of an angle of 35 degrees?
- In a circle with center O, PT is a tangent and PAB is a secant. If PT = 6 cm and AB = 5 cm, find PA.