The problem asks us to find the measure of angle T in the given trapezoid TVZY. The trapezoid has TV parallel to YZ, and TV = YZ. Also, angle V is given as 60 degrees.

GeometryTrapezoidIsosceles TrapezoidAnglesGeometric Proof
2025/3/13

1. Problem Description

The problem asks us to find the measure of angle T in the given trapezoid TVZY. The trapezoid has TV parallel to YZ, and TV = YZ. Also, angle V is given as 60 degrees.

2. Solution Steps

Since TVZY is a trapezoid with TV parallel to YZ and TV = YZ, it is an isosceles trapezoid. In an isosceles trapezoid, the base angles are equal. Therefore, mV=mZm\angle V = m\angle Z.
Since mV=60m\angle V = 60^\circ, then mZ=60m\angle Z = 60^\circ.
Also, in an isosceles trapezoid, adjacent angles between the parallel sides are supplementary. Therefore, mV+mY=180m\angle V + m\angle Y = 180^\circ and mT+mZ=180m\angle T + m\angle Z = 180^\circ.
Since mV=60m\angle V = 60^\circ, we have 60+mY=18060^\circ + m\angle Y = 180^\circ, so mY=18060=120m\angle Y = 180^\circ - 60^\circ = 120^\circ.
Since mZ=60m\angle Z = 60^\circ, we have mT+60=180m\angle T + 60^\circ = 180^\circ, so mT=18060=120m\angle T = 180^\circ - 60^\circ = 120^\circ.

3. Final Answer

The measure of angle T is 120 degrees.

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