Question

AB←→ is perpendicular to CD←→. How many 90° angles are formed by the intersection?

Answer 1

2 right angles can be formed

Answer 2

There are four 90° angles formed by the intersection.

GIVEN

AB⏊ CD

TO FIND

Number of 90° angles are formed by the intersection.

SOLUTION

We can simply solve the above problem as follows;

It is given that Line segment AB is perpendicular to line segment CD. This implies that the angle formed by the intersection of line AB and CD is equal to 90°.

Let AB be the vertical line perpendicular to a horizontal line CD. Let the point of intersection of the two lines be O.

Then

∠AOC = 90°

∠AOD = 90°

∠BOC = 90°

∠BOD = 90°

Hence, There are four 90° angles formed by the intersection.

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