Choose the appropriate triangle according to the following:
Angle B equals 90 degrees.
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Choose the appropriate triangle according to the following:
Angle B equals 90 degrees.
Let's note in which of the triangles angle B forms a right angle, meaning an angle of 90 degrees.
In answers C+D, we can see that angle B is smaller than 90 degrees.
In answer A, it is equal to 90 degrees.
Look at the angles shown in the figure below.
What is their relationship?
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Look for the square corner symbol or perpendicular lines meeting. The vertex where two sides form a 90° angle is where that angle is located.
Orientation doesn't change the angles! A right triangle can be rotated but the 90° angle stays at the same vertex. Focus on which vertex has the right angle, not the triangle's position.
Look for two sides that appear perpendicular (forming an 'L' shape). The vertex where these sides meet contains the right angle, regardless of visual markers.
No! Angle B is always located at vertex B. The angle is named after the vertex where it occurs. Only the triangle with the right angle at vertex B is correct.
Use this rule: "Angle B lives at vertex B". Find the triangle where vertex B (the point labeled B) has the 90° angle, not where B appears elsewhere.
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