please answer only Q 76,77,78
Dear Student,
Q 78.
Follow the given steps to construct an angle of 65º measure and its copy.
(1) Draw a line l and mark a point O on it. Place the centre of the protractor at point O and the zero edge along line l.
(2) Mark a point A at 65º. Join OA. OA is the ray making 65º with line l. Draw an arc of convenient radius in the interior of 65º angle, while taking point O as centre. Let it intersect both rays of angle 65º at point B and C.
(3) Draw a line m and mark a point P on it. With the same radius as used before, again draw an arc while taking point P as centre. Let it cut the line m at point D.
(4) Now, adjust the compasses up to the length of BC. With this radius, draw an arc while taking D as centre, which will intersect the previously drawn arc at point E.
(5) Join PE. PE is the required ray which makes the same angle (i.e. 65º) with line m.
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Q 78.
Follow the given steps to construct an angle of 65º measure and its copy.
(1) Draw a line l and mark a point O on it. Place the centre of the protractor at point O and the zero edge along line l.
(2) Mark a point A at 65º. Join OA. OA is the ray making 65º with line l. Draw an arc of convenient radius in the interior of 65º angle, while taking point O as centre. Let it intersect both rays of angle 65º at point B and C.
(3) Draw a line m and mark a point P on it. With the same radius as used before, again draw an arc while taking point P as centre. Let it cut the line m at point D.
(4) Now, adjust the compasses up to the length of BC. With this radius, draw an arc while taking D as centre, which will intersect the previously drawn arc at point E.
(5) Join PE. PE is the required ray which makes the same angle (i.e. 65º) with line m.
Request you to please ask the remaining questions in separate threads so that our experts can help you in a better way.
Regards