Given that RSTVQ is a regular pentagon and
a)  the type of triangle represented by

b)  the type of quadrilateral represented by TVPS. 
a) To find:
The type of triangle represented by
It is given that
An equilateral triangle has all sides angle are congruent.
Therefore,
All radii of pentagon RSTVQ are congruent.
Therefore,
All sides of a regular pentagon are congruent.
Substitute
b) To find:
The type of quadrilateral represented by TVPS.
Statistics for The Behavioral Sciences (MindTap Course List)
Calculus (MindTap Course List)
Calculus: An Applied Approach (MindTap Course List)
Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach
Applied Calculus
Precalculus: Mathematics for Calculus (Standalone Book)
Probability and Statistics for Engineering and the Sciences
Intermediate Algebra
Finite Mathematics
Essentials Of Statistics
Single Variable Calculus
Single Variable Calculus: Early Transcendentals, Volume I
Essentials of Statistics for The Behavioral Sciences (MindTap Course List)
Mathematical Applications for the Management, Life, and Social Sciences
Finite Mathematics and Applied Calculus (MindTap Course List)
Calculus (MindTap Course List)
Multivariable Calculus
Understanding Basic Statistics
Mathematical Excursions (MindTap Course List)
Calculus: Early Transcendental Functions
Elementary Technical Mathematics
Calculus: Early Transcendentals
Calculus of a Single Variable
Single Variable Calculus: Early Transcendentals
Trigonometry (MindTap Course List)
Contemporary Mathematics for Business & Consumers
Elements Of Modern Algebra
Calculus: Early Transcendental Functions (MindTap Course List)
Finite Mathematics for the Managerial, Life, and Social Sciences
Study Guide for Stewart's Multivariable Calculus, 8th
Study Guide for Stewart's Single Variable Calculus: Early Transcendentals, 8th