Respuesta :
a straight-angle so-called, is a straight-line-angle, namely the angle of a straight-line, well, a straight-line has 180°, what's half of that? well, surely you'd know already.
1/2 of a straight angle is an : Option(D) Right angle .
What is a straight line ?
In geometry, the notion of line or straight line was introduced to represent straight objects with negligible width and depth. Lines are an idealization of such objects, which are often described in terms of two points. A straight line subtend an angle of 180° at center.
What is the value of 1/2 of a straight line ?
As a straight line subtend an angle of 180° at center.
1/2 of a straight line is 90°
90° means that the angle is a right angle .
Thus 1/2 of a straight angle is an : Option(D) Right angle .
To learn more about straight angle , refer -
https://brainly.com/question/15320957
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