say it is a 90 degree angle; find the 90 degree line on the protractor and draw a line continuing from it about 1/2 a centimetre. Remove the protractor and join up the lines
use a protractor
Well, honey, drawing a quadrilateral with one reflex angle is as easy as pie. Just sketch out four sides, make sure one angle is greater than 180 degrees, and voilà, you've got yourself a quadrilateral with a reflex angle. Just remember, it may look a little wonky, but hey, math isn't always pretty.
1801 was the year the first advanced protractor was invented by Joseph Huddard
To construct an angle of 150 degrees using a compass, you would first draw a ray as the initial side of the angle. Then, place the compass on the vertex of the angle and draw an arc that intersects the initial ray at a point. Next, without changing the compass width, place the compass on the intersection point and draw another arc that intersects the previous arc. Finally, draw a ray from the vertex through the point of intersection of the two arcs to create an angle of 150 degrees.
Triangles are either accute, obtuse, or right. To draw an accute triangle start by drawing an accute angle (less than 90 degrees). Then extend the ends of the angle and connect them making sure that both new angles are also acute. To draw a right triange first draw a right angle. Then extend the angle and connect to form two accute angles. To draw an obtuse triangle first draw an obtuse angle (greater than 90 degrees). Then extend the sides of the angle and connect creating 2 accute angles.
The first step is probably to get a piece of paper.
The first step is probably to get a piece of paper.
In first angle auto graphic projection the planed, view is drawn exactly below the front elevation. What is viewed from the left is drawn from the right side of the front, it is drawn in the 1st angle and 3rd angle.
use a protractor
To measure the angles of a hexagon with a protractor, first, ensure the hexagon is flat on a surface. Place the center hole of the protractor over the vertex of the angle you want to measure, aligning one side of the angle with the baseline of the protractor. Read the measurement where the other side of the angle intersects the protractor's scale. Repeat this for each vertex to obtain all six angles of the hexagon.
To measure a reflex angle of 283 degrees with a protractor, first, position the protractor so that the vertex of the angle aligns with the midpoint of the protractor. Since a reflex angle exceeds 180 degrees, measure the smaller angle formed by the two lines, which will be 77 degrees (360 - 283 = 77). Then, count clockwise from the 180-degree mark to the 283-degree mark on the protractor to confirm the measurement visually.
If you don't have a protractor, you can use a ruler and a compass to construct angles. First, draw a straight line and mark a point on it as the vertex of the angle. Then, use the compass to measure the desired angle by drawing arcs and creating intersections that you can connect to form the angle. Alternatively, you can use a piece of paper folded to create right angles or reference angles like 30, 45, or 60 degrees.
To measure an acute or obtuse angle:Put the cross-hairs at the centre of the base line of the protractor on the point of the angle;Align one zero on one arm of the angle (keeping the cross-hairs in place) with the circular part of the protractor over the other arm;Read off the angle of the other arm with the scale that starts at 0o on the first arm.To measure a reflex angle:Measure the angle (of the small angle) between the arms as above;Subtract the found angle from 360o.Note:The base line of the protractor is the straight line marked on the protractor that runs from 0o to 180o; half way along this line will be a perpendicular line towards the 90o mark which may touch or cross the base line - this point is the "cross-hairs".To draw a given angle:To draw an acute or obtuse angle:Draw one arm of the angle;Put the cross-hairs at the centre of the base line of the protractor on the end of the arm that forms the point of the angle;Align one zero on the drawn arm of the angle (keeping the cross-hairs in place) with the circular part of the protractor where the other arm should go;Mark the angle of the other arm with the scale that starts at 0o on the first arm.Draw in the other arm;Optional: mark the angle (between the lines) with a small arc near the point.To draw a reflex angle:Subtract the angle from 360oDraw as above; except the angle is marked with a small arc round the outside of the arms (instead of between them).
To draw an 82-degree angle using a protractor, first, place the protractor on the vertex of the angle where the baseline aligns with the horizontal line. Locate the 82-degree mark on the protractor scale, ensuring that you read from the correct side of the protractor. Mark a point at the 82-degree mark, then remove the protractor and use a ruler to draw a line connecting the vertex to the marked point, forming the 82-degree angle. To verify, measure the angle with the protractor to confirm it is indeed 82 degrees.
To draw adjacent angles with given measurements, you can use a protractor and a compass. First, use the protractor to measure and draw the first angle by placing the protractor's center point at a vertex and marking the desired angle. Next, place the compass point at the vertex of the first angle, draw an arc that intersects the angle's rays, and then use the protractor again to measure and draw the second angle adjacent to the first, ensuring the two angles share a common vertex and side. Alternatively, you can use a straightedge to construct one angle, then rotate the straightedge to the desired measurement for the adjacent angle, ensuring they are connected at the vertex.
To make a 230-degree angle using a protractor, first, place the center point of the protractor at the vertex of the angle. Align one side of the angle with the 0-degree line on the protractor. Then, measure 230 degrees from the 0-degree line, marking the point on the paper. Finally, draw a line from the vertex to the marked point to complete the angle.
To measure a reflex angle using a 180-degree protractor, first position the protractor so that its baseline aligns with one side of the angle, ensuring the center point is at the vertex. Measure the smaller angle formed on the protractor, which will be less than 180 degrees. Subtract this measurement from 360 degrees to find the reflex angle. For example, if the smaller angle measures 120 degrees, the reflex angle would be 360 - 120 = 240 degrees.