# MathVoclessons1-7

### 27 terms by rcalleja

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Geometry lessons 1-7

### intersection

point where two or more lines cross

### equilateral

triangle with 3 equal sides

### corresponding

angles in the same position at different points of a figure

### protractor

tool used to draw or measure angles

### ray

set of points that is part of a line; has an endpoint and extends

### vertex

common point to both sides of an angle

### acute

angle smaller than 90 degrees

### vertical

pairs of opposite angles; have the same measure

### right triangle

triangle with a 90 degree angle

### supplementary

two angles whose sum of their measures is 180 degrees

### straight

angle measuring 180 degrees

### isosceles

two of the sides in a triangle are the same

### equiangular

triangle with 3 equal angles, measuring 60 degrees

### interior

angle within a polygon

### acute triangle

a triangle with all 3 angles less than 90 degrees

### obtuse triangle

triangle with one obtuse angle

### obtuse

larger than 90 degrees

angle that shares a vertex and a common side with another angle

### right

a 90 degree angle

### complementary

two angles whose sum of their measures is 90 degrees

### exterior

angle formed by extending one side of a polygon at a vertex

### scalene

all the sides of a triangle have different lengths

### congruent

having the same size and shape

### similar

figures that have the same shape but not the same size

polygons with 4 sides and 4 angles

### diagonal

a line that connects two vertices that are not next to each other

### regular polygon

polygon with all equal sides and angles

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