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2 cards from this section. Quick, good the night before a test.
If angle A of triangle XYZ is 40° and angle B is 80°, what is angle C?
Remember to sum the given angles and subtract from 180°.
Given triangle PQR, if angle P measures 50° and angle Q measures 70°, find the measure of angle R.
Use the Triangle Sum Theorem.
The sum of the angles in a triangle is always:
Think about a triangle's shape and its angles.
True or False: The sum of the interior angles of a triangle is 90°.
Recall the Triangle Sum Theorem.
In triangle JKL, angle J is three times greater than angle K and angle L measures 10°. Find the measure of angles J and K.
Set up the equation using angle relationships.
A quadrilateral is formed by two triangles sharing one angle. Given the angles of one triangle are 40°, 60°, and x°, and the other triangle has two angles of 80° and 90°. Find x.
Use both Triangle Sum Theorem and properties of quadrilateral angles.
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