Triangle tic is an isosceles triangle with vertex angle i if the measure of < i=70 then find the measure of < t a- 70 b-11
2 answers:
Answer:
The answer is the option C
Step-by-step explanation:
we know that
An isosceles triangle has two equal sides and two equal angles
The two equal angles are called the base angles, and the third angle is called the vertex angle
In this problem we have the isosceles triangle TIC
∠I= -----> vertex angle
∠T=∠C -----> base angles
Remember that the sum of the internal angles of a triangle is equal to
so
∠I+∠T+∠C=
∠I+2∠T=
Substitute
+2∠T=
Solve for angle T
2∠T=
∠T=
∠T=
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