Q2 of 115 Page 8

Define supplementary angles.

Two Angles are Supplementary when they add up to 180 degrees. They don't have to be next to each other, just so long as the total is 180 degrees. Examples: 60° and 120° are supplementary angles.


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27

Fill in the blanks in each of the following to make the statement true:

(i) If two parallel lines are intersected by a transversal, then each pair of corresponding angles are …..


(ii) If two parallel lines are intersected by a transversal, then interior angles on the same side of the transversal are ……….


(iii) Two lines perpendicular to the same line are …….. to each other.


(iv) Two lines parallel to the same line are ….. to each other.


(v) If a transversal intersects a pair of lines in such away that a pair of alternate angles are equal, then the lines are …………


(vi) If a transversal intersects a pair of lines in such away that the sum of interior angles on the same side of transversal is 180°, then the lines are ……

 1

Define complementary angles.

 3

Define adjacent angles.

 4

The complement of an acute angle is ……….