Indicates which angle is greater
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Indicates which angle is greater
Note that in drawing A, the angle is a straight angle equal to 180 degrees:
While in drawing B, we are given a right angle, equal to 90 degrees:
Therefore, the angle in drawing A is larger.
Find the measure of the angle \( \alpha \)
Look at the opening between the two rays! A wider opening means a larger angle. The straight angle opens all the way to form a line (180°), while the right angle only opens to form an L-shape (90°).
The size of the drawing doesn't change the angle measure! Focus on the relationship between the rays - whether they form a line, an L-shape, or something else.
Yes! Remember these key angles:
Because the two rays point in exactly opposite directions, forming a perfectly straight line! It's like opening a book completely flat - that's 180°.
Absolutely! Angles can measure up to 360° (a full circle). But in this problem, we're comparing a 180° straight angle with a 90° right angle, so the straight angle is larger.
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