Question

1. a. draw a right angle. how do you know its a right angle?

Explanation:

To draw a right angle, we can use a straightedge and a compass or a set square. A right angle is defined as an angle that measures exactly \( 90^\circ \). We can verify it is a right angle by using a protractor to measure the angle, and if the measurement is \( 90^\circ \), or by checking that the two lines forming the angle are perpendicular (they intersect at \( 90^\circ \), which can also be confirmed using a right - angled tool like a set square where the right - angled corner of the set square matches the angle we have drawn).

Answer:

To draw a right angle: Use a set square (or draw two perpendicular lines, e.g., one horizontal and one vertical line intersecting at a point). We know it's a right angle because a right angle has a measure of \( 90^\circ \). We can confirm this by using a protractor to measure the angle (it will show \( 90^\circ \)) or by checking that the two lines forming the angle are perpendicular (e.g., using the right - angled corner of a set square to match the angle, or using the property that perpendicular lines intersect at \( 90^\circ \)).