In figure pairs of interior angles on the same side of the transversal are
∠A, ∠H ; ∠B, ∠G
∠B, ∠H ; ∠A, ∠G
∠C, ∠F ; ∠D, ∠E
∠C, ∠E ; ∠D, ∠F
Write converse of “ In Δ ABC if AB = AC then ∠ B = ∠ C.
In Δ ABC if ∠ B ≠ ∠ C then AB = AC
In Δ ABC if ∠ B + ∠ C = 180o then AB = AC
In Δ ABC if ∠ B > ∠ C then AB = AC
In Δ ABC, if ∠ B = ∠ C then AB = AC
If a transversal intersects a pair of line making alternate interior angles, then the lines are
Parallel
Perpendicular
Intersecting
None of these
In a theorem ‘ if ‘ part is called
Existential part
Uniqueness
Both (1) and (2)
. If ∠A : ∠B = 2 : 3 then ∠A =
180o
72o
45o
30o
l, m are two lines such that l U m = Φ then 1, m are
Concurrent
Intersecting lines
In a theorem ‘ then ‘ part is called
In the below figure one pair of alternate interior angle is ∠C and ∠E then the other pair is
∠C , ∠D
∠B, ∠F
∠D, ∠F
∠G, ∠H
If A , B, C lie on the same line, they are called
Collinear points
Coplanar points
In the below figure l || m then ∠x =
110o
70o
(110 – x)o