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3 years ago

Help me i don’t understand this please

Mathematics

2 answers:

kari74 [83]3 years ago

6 0

9514 1404 393

Answer:

RV = 35°
RTV = 325°
PVR = 180°
PQ = 115°

Step-by-step explanation:

The relevant relations are ...

the measure of a semicircle is 180°; a circle is 360°

vertical angles are congruent (have the same measure)

the measures of adjacent arcs add to give the measure of the overall arc

the measure of an arc is the same as the central angle it subtends

arc RV

Angle RCV is a vertical angle with respect to angle PCT, so has the same measure. It is a central angle, so ...

angle RCV = angle PCT = 35° = arc RV

arc RTV

Arc RTV is arc RV the long way around. Its measure is the difference between 360° (a full circle) and short arc RV:

arc RTV = 360° -35° = 325°

arc PVR

Arc PVR is a semicircle.

arc PVR = 180°

arc PQ

Arc PQR is a semicircle, so is 180°. Arc QR is shown as 65°, so arc PQ is the difference:

arc PQ = 180° -65° = 115°

RUDIKE [14]3 years ago

5 0

Rv is 35 is the only one I know :(

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