This study investigated the effect ofenriched expository method on interest and performance in geometry among Junior Secondary School Students in Kaduna State, Nigeria. The study determined the effect ofenrichedexpository method on student?s interest and performance in geometry. Italso examined thedifferential effect ofenrichedexpository method on the performance of male and female students. The study was guided by four research question and four null hypotheses. The study adopted a Pre-test and Post-test quasi-experimental design. The sampleconsisted of 300 government JS.II students made of 146 males and 154 female students. This was drawn from a population of five thousand two hundred and sixty two (5262) students using stratified random sampling. The experimental group was exposed toenriched expository method and control group was taught using lecture method. The research instruments used were: Geometry Construction Performance Test (GCPT) and GeometryInterests Inventory(GII) with reliability coefficient of 0.73 and 0.83. The data collected were analyzed and presented using Descriptive statistics of mean and standard deviation for researcher question andinferential statistics of t-test to test all four (4) formulated hypotheses at P≤ 0.05levels of significant by aid of computer software Statistical Packagesfor Social Science (IBM version 20).The result obtained showed that students taught with enriched expository method generated more interest and better performances in geometry than those taught the lecture method. The study also revealed that male and female students taught enriched expository method did not differ significantly both interest and performance. The study therefore, recommend that the use ofenriched expository method should be considered for mathematics teacher as a better option for teaching and learning of mathematics particularly geometry. Conclusively, low performance can be reduced when there is positive interest in the process of solving problem in geometry. Finally, that government and professional bodies should organize seminars, workshops and conferences, with the aimof teaching junior secondary school teachers on how to use enriched expository method effectively in teaching and learning of geometry.