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Find the measurements of the numbered angles in the rhombus QRST

Find the measurements of the numbered angles in the rhombus QRST-example-1
User Rhs
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1 Answer

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In a rhombus, the diagonals intersect at an angle of 90º.

Let O be the intersection of both diagonals.

Since the diagonals on a parallelogram intersect at the middle point, and all the sides of a rhombus have the same meaure, then all the triangles that are formed (ROS, TOS, TOQ, ROQ) are congruent.

Then, we know that:


m\angle1=90º
m\angle2=40º

Since the angles 3 and 2 are complementary angles, then:


m\angle3=50º

Since the angles 4 and 3 are congruent, then:


m\angle4=50º

Therefore:


\begin{gathered} m\angle1=90º \\ m\angle2=40º \\ m\angle3=50º \\ m\angle4=50º \end{gathered}

User Laxman
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