This math topic focuses on solving problems related to inscribed triangles in circles, where one side of the triangle is a diameter. Specifically, it involves finding the missing angle of the triangle using properties from circle geometry. Each question presents a triangle with one known angle and requires calculating the second angle, exploiting the theorem that an angle inscribed in a semicircle is a right angle (90 degrees). The topic is suitable for learners at an intermediate level in geometry.
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Find angle BDZ in degrees given that BZD is 45º and DZ forms a diameter
Math worksheet on 'Geometry of Circles - Inscribed Triangle on Diameter - Missing Angle (Level 2)'. Part of a broader unit on 'Geometry - Intermediate - Intro' Learn online: app.mobius.academy/math/units/geometry_intermediate_intro/ |
Find angle RYX in degrees given that RXY is 25º and YX forms a diameter |
80º |
125º |
5º |
20º |
140º |
65º |
Find angle CPR in degrees given that CRP is 45º and PR forms a diameter |
15º |
90º |
60º |
120º |
0º |
45º |
Find angle ZRP in degrees given that ZPR is 25º and RP forms a diameter |
110º |
65º |
95º |
50º |
20º |
80º |
Find angle PZR in degrees given that PRZ is 45º and ZR forms a diameter |
30º |
0º |
15º |
75º |
45º |
135º |
Find angle MBN in degrees given that MNB is 65º and BN forms a diameter |
50º |
85º |
20º |
25º |
55º |
115º |
Find angle RCX in degrees given that RXC is 65º and CX forms a diameter |
35º |
70º |
55º |
115º |
20º |
25º |
Find angle YBX in degrees given that YXB is 35º and BX forms a diameter |
20º |
40º |
130º |
100º |
55º |
25º |