A square has four right angles (90°). Each diagonal splits a corner into two angles of 45°. Note also that the diagonals cut each other in half at right angles. A rectangle has four right angles. The ...
Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. What is a quadrilateral? A quadrilateral is a four-sided shape where each of the sides are straight and ...
An angle is the space between two lines that start at the same point. This point is called the vertex. Angles measure the size of a turn in degrees. You can show degrees using the symbol ° after the ...
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