R Statement
Reason
is a
SA is a secant and ''SR
tangent
intersecting in the exterior of Oo at Given
S.
m22 = m2l+mZSAR
The measure of the exterior angle
of a triangle is equal to the sum of
the measures of its remote interior
angles.
m21 = m22-M_SAR
Addition Property
m22 =- MAR
If a tangent and a chord intersect
at a point on a circle the measure
of each angle formed is one half the
measure of its intercepted arc.
mZSAR = m(TR
The measure of an inscribed angle
is one half the measure of its
intercepted arc
m_1 = MARMTR
By Substitution
m2 1 = (MÁR - TR)
Distributive Property
Let's Believe
1. In a two-column proof what are written on the left hand side?
hout 1
+11 16cide​