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Angles and Lines

Forgive us for being obtuse, but this is a cute concept, and we think it’s right for you. See more

Level 2


What is the measure of the blue angle in degrees?

In the figure above, \(AE\) is the diameter of the circle.
What is the measure of \(\angle ABC+\angle CDE \) in degrees?

Three line segments \(AD, BE, CF\) intersect at a single point in the diagram above. Find the sum of the angles \(a+b+c+d+e+f\) in degrees.

In a parallelogram \(ABCD\), the length of \(AB\) is twice the length of \(AD\). \(E\) is the midpoint of \(AB\). Find the measure of \(\angle DEC\).

As shown in the diagram above, there lie 3 squares between 2 parallel lines such that each pair--(line, square) or (square, square)--just meet at a vertex. Find the measure of angle \(x\) in degrees.


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