Question 11 Mark
Two straight lines are cut by a transversal so that the co-interior angles are supplementary. Are the straight lines parallel?
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Question 21 Mark
Two straight lines are cut by a transversal. Are the corresponding angles always
Answer
View full question & answer→If a transversal cuts two straight lines, their the corresponding angles are not equal unless the lines are not parallel. One in case of parallel lines, the corresponding angles are equal.
Question 31 Mark
Draw a line AB = 9 cm. Mark a point P in AB such that AP=5 cm. Through P draw (using set-square) perpendicular PQ = 3 cm. Measure BQ.
Answer
BQ = 5 cm
View full question & answer→BQ = 5 cm
Question 41 Mark
The figure given below shows a pair of parallel lines cut by a transversal for the following case, find a and b, giving reason.
Question 51 Mark
The figure given below shows a pair of parallel lines cut by a transversal for the following case, find a and b, giving reason.
Answer
View full question & answer→a = 110° (Vertivally opposite angles)
b = 180° - a (Co-interior angles)
= 180° - 110° = 70°
b = 180° - a (Co-interior angles)
= 180° - 110° = 70°
Question 61 Mark
The figure given below shows a pair of adjacent angles AOB and BOC. Find whether or not the exterior arms OA and OC are in the same straight line
Answer
View full question & answer→∠COB + ∠AOB = 88° + 112° = 200° ; which is not 180°.
⇒ The exterior amis OA and OC are not in the same straight line.
⇒ The exterior amis OA and OC are not in the same straight line.