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100 points! Will give brainliest! Cou|d somebody he|p me with geometry? And exp|ain, please. Thank you for reading this <3

100 points Will give brainliest Coud somebody hep me with geometry And expain please Thank you for reading this lt3 class=

Respuesta :

Answer:

The measure of angle a is 45 degrees.

Step-by-step explanation:

Notice that since PS = RS, this is an isosceles triangle. This means that the base angles are equal. We also know that the sum of interior triangles of a triangle equals 180, then, if 'a' is the base angle, we have the following equation:

90 + a + a = 180

2a = 180 - 90 = 90

a = 90/2 = 45

a = 45

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